Diesel Injector Ticking Noise

The frequency of the tapping noise will increase with engine rpm. Detroit Diesel is not. If you believe that an injector has failed, do the screwdriver test and listen for the clicking noise an injector makes as it fires. the noise is definately coming from the right side of the engine. All runs and changes fantastic though, so the ticking doesn't appear to be causing any damage or effects at this point. - Valves - Exhaust leak - A/C Clutch engauge / disengauge (Paul is right, happens in defrost). When you hear abnormal noises there is something wrong. Its like a ticking noise right? From everything Ive read, switching over to Valvoline Premium Blue is supposed to help. Not sure if it is injectors or something else. Wondering if it could be the injector. This can cause a difficult- or no-start condition as well as a smokey exhaust. Before the engine gets too hot, put your hand on it. The following suggestions are listed for your assistance. The valve that opens may have a sort of ticking noise with the timing. Purchasing Used Diesel. It's a very faint tick, but I pay close attention to all the dynamics on the car and I think the tick is definitely not normal. I imagine the other three injectors will soon fail. This is an ongoing problem according to them - and they've had to completely replace 6 motors after the sticking became so bad it jammed open and melted a hole in the piston. I have a noticeable clacking noise now, which only happens around 1500-2000 RPM. What is causing a tapping noise in a Detroit diesel 60 series engine? 1 2 3. A ticking noise can be heard, even after car warms up. Be careful about the fuel spraying around. Find 10r Engine In Stock Now. at first I thought it was a valve noise, but now I'm thinking its a fuel injector any searches about ticking noises seem to come up with only the earlier models that had head failures. It seems to be less noticeable once the engine gets to fully warmed up temp, but it is still there if I listen carefully. Clicking noise would be caused by injector mechanism not moving smoothly (spring sticking, disc hanging up, etc. Thinking of swamping injectors around and testing for sound. Hey all, my 190d 2. Talk to our professionals today at Diesel Pickup Specialists, Inc in Inman about scheduling your diesel engine maintenance today and before you decide to replace your diesel vehicles if you have engine issues. I use Liqui Moly diesel additive and this appears to make some difference, but the noise is still there. The noise is coming from under the hood and is loudest under the wheel wells. It only happens between 1500 - 2200 revs. I think its pretty close to the bumper right? I can hear belt noise when im standing infront of the hood. I've read on other threads regarding engine noise in the 6. 6 with 82,000 miles has developed a ticking noise from the engine. Audible ticking on LB7 duramax Hello So, i have a 2003 GMC Sierra 2500HD with a 6. My truck ran great before the knocking noise so why would all injectors fail at once. My engine has developed a strange ticking sound. After time and use, these spool valves will start to weaken. The service department say its the sound of the injectors. If you're questioning what is normal engine noise, I may have the answer. Loud tapping noise from injector. Low octane fuel will not cause a ticking noise @ idle at all. That's why diesels continue to be a popular option in many pickup trucks today. Hey chaps one for those wiser than I am which makes most of you. They're also known for their pulling power and rugged durability. Does anyone else ever hear some ticking noise coming from underneath the truck after it is shut off. Low-octane gas has also been known to cause an ignition knock in high-performance engines. Engine ticking and sounds like a diesel. had something changed that's near front of the engine that's connected to the auxiliary belt (don't ask me what its call cos i don't know lol ) anyway that didn't work. 4L's, and sound like a soft ticking noise which is normal, but if it is your cam phasers your truck has to sound like a busted diesel in order for ford to warranty it, I have 2000km left on my extended ford warranty and they wont fix my cam phasers, "it doesn't sound bad enough" they say. The Power Stroke ® Diesel engine's family of vehicles currently includes the Ford F-250 through F-550 Super Duty pickup trucks and chassis cabs, E-Series vans and cutaways, and Low Cab Forward (LCF) models. Indirect injection systems limit the pressure rise by throttling of the combustion gasses through the pre-chamber throat. Diesel Information Tips and FAQ. Thinking of swamping injectors around and testing for sound. Well it could be related to spark. If the naughty noise is still there you should be able to hear it more clearly by not having the accessories whirring away. Just bought it couple months back, engine is having ticking noise in low revs when I press acceleration pedal hard ( if I am very gentle with acc. The noise may also be described as sounding similar to a diesel engine. Purchasing Used Diesel. Subject: Normal Fuel Injector Ticking IP: Logged Message: I believe my fuel injectors are ticking louder than I am used too. Like mentioned, yank the wire to each for a few seconds [while idling] to see if the noise changes. Car is on 100k now. The oil cooler failed and it did overheat as there was contamination of the coolant with oil. Low-octane gas has also been known to cause an ignition knock in high-performance engines. No ticking in front of the service manager or diesel tech! That's when they decided to change the injector pump Which is still on order due to the strike. Some 2011-2019 F-Super Duty 6. I am a new member and I amwondering if any of you can help me with a problem on a Ford Transit. If it sounds like a single knock, you (or your mechanic) can isolate the cylinder by disabling the spark or the fuel injector for each cylinder one at a time. 5 Best Fuel Injector Cleaners of 2019 (And Why They Are Worth It!) In the absence of a fuel injector, your motor will absorb gasoline directly as drops. If it's a ticking, that's good. Hi this is the second set of the fuel injector on this diesel engine,I talk to the different mechanic on dealers an privet shops and ask what is this problem and say is because the fuel,the used,how you drive,etc but no body say what is the reason, my problem is this injector set is not like replace like a set the spark plugs on gas engine is much money $5600, and I not the only person, I. I picked up a 92 XJ had a slight ticking noise at the top end (almost sounds like a diesel but not real loud very faint) figured it was a stuck lifter or loose rocker. Injector timing ticks sounds like a crackle or a quick clattering and is very distinctive and you are unlikely to have timing clatter without a tune or something that advances injector timing. The injection noise is actually quieter after the truck is wamed up. I tend to notice it when I get home from work and back in the driveway. Fuel system - mainly the electric fuel pump and the injectors (the pump is easily detected as it causes the noise when you turn the ignition key to ON (not Start) and then if it is like most pumps, it will pressurize the fuel lines and the cut off). LOUD ticking noise in engine!!! TDI 101. 7L diesel equipped vehicles may exhibit a ticking/tapping noise traced to the reductant injector. with the screw driver method what are in indications that you. I've been searching for anyone else experiencing a tapping in the engine that makes the truck sound like a diesel. Clicking noise would be caused by injector mechanism not moving smoothly (spring sticking, disc hanging up, etc. Most obious when cold. Any sort of banging noise is often the number one sign that your car is in need of some serious repair work. Purchasing Used Diesel. yes you read that correctlky. At least you could eliminate that as the racket you hear. Purchase my first 2016 Toyota Tacoma and the engine has ticking noise and no one will do anything about it. At Seaboard Marine, we live and breathe Cummins Marine Diesel the community forum is a place where you can share your experiences, ask questions about your Cummins Marine engines & products, and interact with others in the boating community. Is this normal? I also believe my timing chain may be knocking. A search of " Injection pump clicking" on youtube shows a video of a person turning over his engine with the act same clicking sound at the injection pump. 4L Engines IMPROVED DESIGNOur 6. Valve Adjustments and Injectors. They can determine if there are any service bulletins that apply to your car. No ticking in front of the service manager or diesel tech! That's when they decided to change the injector pump Which is still on order due to the strike. Its whisper-quiet before an oil change, and then makes a loud tapping after a new filter and fresh oil. 7L Diesel – Tick Tap And/or Typewriter Noise At Idle. when accelerating there is a ticking noise comeing from engine,it sounds as if its comeing from the carbarator,i only bought this car six months ago from a dealer and was told that the ecotech engines are noisey but it seems to be geting worse. It's not unusual for them to have injector issues, which usually shows up by heavy knocking when the engine is cold and is fixed by replacing the injectors. If the click is missing, the likely problem is the solenoid. Early failure just proves you purchased improper* gasoline or didn't perform mainteance correctly. Best way to determine which of the two injectors is the faulty one would be to increase power to one at a time until it balances back out. 2012 Ford F-350 SD Diesel Fuel System Technical Service Bulletins (TSBs). " If this is your problem or not, I don't know but the noise is almost identical. I have a 2013 4runner SR5 with 20,000miles. The "cackle" noise will be found early in an engine's life due to low fuel pressure and/or the relationship of injectors and engine firing order, or anytime there is a drop in fuel pressure. All 6600 Duramax diesel engines have this condition: however, some are more audible than others. 7L Diesel - Reductant Injector Ticking/Tapping Noise Some 2011-2019 F-Super Duty 6. Well, at 34000 miles, the sound is as loud as yours, and when put into gear it gets louder. Loud tapping noise from injector. 6L, 3-valve or 5. If this is your first visit, be sure to check out the FAQ by clicking the link above. With proper gasoline and mainteance [BG44k] they should all last in excess of 300,000 miles. 4L Powerstroke Diesel engines exhibit this normal audible condition (some engines will exhibit greater audible noise due to engine build variations). Ford Fuel Injector Failure: What Causes it and How to Fix It. Fuel injectors can cause a whole host of problems that can lead to major engine damage if not diagnosed and replaced or repaired as soon as possible. The garage replaced the lifters, cylinder head gaskets, etc, and carried out full inspection 2 service but the ticking noise was still there. Injector Rebuild. Im getting an oil leak from what I gues is the oil filter cover under the engine. It has a timing chain, and the engines use 0-20 synthetic oil. You'll feel the injector clicking if its good. Looks like the bloke was told by Toyota that his injectors or electronic controls are causing the start up noise by passing too much fuel. The 2005 Ford F-150 has 62 problems reported for loud ticking/knocking noise from motor. Had one come loose on me once and it made a very distinct ticking noise. To listen to the injector, you can use a mechanic's stethoscope, an inexpensive tool you can buy at most auto parts stores. Having the sound match RPM's certainly gives a clue that it is associated with the operation of the engine. this is considered a normal condition and does not require service. It is the same whether the engine is hot or cold. It gets louder if you accelerate but never goes away even on tick over. When the feed to No 2 cylinder was spitting diesel the noise went, and reappeared when re-tightened. i have a 96 hilux 2. Recently I have been walking beside the tractor as my daughter wants to help out and run the tractor all the time. , the engine, the first thing to check is your valves. Anyone have any ideas ? I am thinking injectors but could be completely wrong. > Question as answered what does knocking in petrol Engine mean and how is it different from detonation. that of a common-rail diesel engine. I sourced a new injector and they replaced it, all injectors now tested fine, but still the ticking noise is still there. All fuel injectors make a clicking noise, its how they are desgined, bearing in mind our cars have six of them. Average repair cost is $4,390 at 79,850 miles. It only happens between 1500 - 2200 revs. An injector will sound louder when the engine is cold because it is dumping more fuel than when at operating temperatures. In fact, it can signify normal engine operation. The noise may also be described as ticks, taps, knocks or thumps. GMC today announced the redesigned Duramax 6. 7l diesel equipped vehicles may exhibit a ticking noise at idle after an engine oil change. 3L fuel injector contains many more components, which are not normally considered 'wear' items. Today they replaced a fuel line that seemed to make the ticking more often and louder. After time and use, these spool valves will start to weaken. I did all my research and I found that it was an issue with one of the cylinder heads. 2 L diesel engine in light trucks and Sport Utility Vehicles between 1981 and 1993. I also use Millers diesel max in every tank. Verify that the vehicle has been driven at least 20 miles since the last injector replacement. When it warms up its fineTurbo diesel engine [sorry]Anybody got any ideas>>>cheersIm running penrite 5w40 oil and since ive used this oil its gotten worse. All BMWs direct injected motors are noisy, it is normal for it to sound the way they do in the video. Success! Injectors knocking, ticking, diesel noise how to. We've bought a Mondeo Mk3 from 2001 with the 2. The pump is not timed from the factory and in certain situations it is timed in just the right spot where the pump and cam are not "in-sync" so to speak. It's a very faint tick, but I pay close attention to all the dynamics on the car and I think the tick is definitely not normal. I usually notice it if I am outside the truck and it is running. The Power Stroke ® can also be found in past Excursion ® as well as past model year F650 / F750 vehicles. Fuel Pump ticking noise [Video!] was created by Temeku At first I thought it was coming from the catalytic converter, but further inspection revealed that it's definitely the fuel pump. Fuel Pump ticking noise [Video!] was created by Temeku At first I thought it was coming from the catalytic converter, but further inspection revealed that it's definitely the fuel pump. In turbocharged diesel engines, combustion noise is less dominant at high-speed and high load steady-state conditions but can become dominant at idle, light-load or under acceleration [2490]. The ticking noise is from the GDI fuel injection pump. trucks runs perfect with no check engine light or anything. " If this is your problem or not, I don't know but the noise is almost identical. Chuck a screw driver against the front of the pump, and the thermostat housing area, and see if its coming from there. Faulty injector(s) Probably the biggest result of injector failure for Common Rail injectors is due to the injectors having excessive return flow or back leakage. Engine ticking IGOTACUMMINS is an online forum and community for all Cummins Turbo Diesel enthusiasts. add 2oz of 2 stroke oil per gal of fuel. Some 2011-2018 F-Super Duty 6. Some oems do a good job as hiding the noise, others don't care enough to do it. Modern diesel cars (since 2009) have to be fitted with a Diesel Particulate Filter (DPF) in the exhaust to stop this soot passing into the atmosphere. Re: What causes diesel rattle? To put it in a nutshell, the diesel "rattle" and the knock/ping of a gasser are essentially the same thing. impulsive powertrain noise and is illustrated in this study through examples from case studies. Switching back to previous fuel type may help, but at least one injector needs attention. 9 TDI (110 BHp) Manual I have a weird fault that is driving me mad. Threads Tagged with ticking. 2L Duratorq TDCi Diesel Engines: Hey all just starting to get my prolems fixed when sudenly i've now noticed 2 new ones! 1. After about 60- 100,000 miles all injectors get noiser and noiser, however they won't fail from the noise. While I've never heard of a diesel HPFP ticking ( the idea of a CP4 ticking or rattling is new to me), I did forget about the chirping FA20 HPFP used on gasoline-powered BRZs and FRSs. Re: Ticking/clicking noise. Furthermore, I’ll also talk about the products that you’ll need to get rid of noisy lifters. 7L Diesel - Reductant Injector Ticking/Tapping Noise. The ticking noise worsened by the time of my next oil change and just so happened a brand new Canyon diesel with 50 miles rolled into the shop for pre-delivery inspection. If you were to take a stethoscope and put it to any of those injectors it would be clear that is the source of that ticking. If noise stops on one, thats the problem one. then its a very unstable cycle causing a lot of noise and sometimes it sounds like a metallic metal on metal sound. The Power Stroke ® can also be found in past Excursion ® as well as past model year F650 / F750 vehicles. I do appreciate a normal cold IDI diesel engine is noisy but this is +30% extra. There is a very loud clicking, almost sounds like electricity arcing. it sounds like there is one tick per cylinder stroke. The ticking / tapping noise is most noticeable at the rear of the driver's side front wheel well. Virtually all diesel engines use direct fuel injection. For the 2nd time. If the vehicle does. Some vehicles equipped with a 4. Fuel Pump ticking noise [Video!] was created by Temeku At first I thought it was coming from the catalytic converter, but further inspection revealed that it's definitely the fuel pump. They can determine if there are any service bulletins that apply to your car. then undo the injector pipes one by one (diesel every where!) untill the noise goes, thats the one. The Power Stroke ® Diesel engine's family of vehicles currently includes the Ford F-250 through F-550 Super Duty pickup trucks and chassis cabs, E-Series vans and cutaways, and Low Cab Forward (LCF) models. You will normally hear a light ticking noise from a good injector but a knocking noise should be checked out by your dealer ASAP. 7L diesel equipped vehicles may exhibit a ticking/tapping noise traced to the reductant injector. All runs and changes fantastic though, so the ticking doesn't appear to be causing any damage or effects at this point. 3 Power Stroke Diesel Engines, And How You Can Fix Them However there are several common problems that can develop over time. Looks like the bloke was told by Toyota that his injectors or electronic controls are causing the start up noise by passing too much fuel. Early failure just proves you purchased improper* gasoline or didn't perform mainteance correctly. Re: What causes diesel rattle? To put it in a nutshell, the diesel "rattle" and the knock/ping of a gasser are essentially the same thing. Less noise at higher rpm. 6 with 82,000 miles has developed a ticking noise from the engine. 2006 Stype sport 3. Almost like a valve lifter noise. 7 Powerstroke Diesel Common Issues, Problems, and Fixes; Ford 6. I own a 2013 2500 diesel with a G-56. Well, at 34000 miles, the sound is as loud as yours, and when put into gear it gets louder. 6-liter Duramax turbo-diesel V-8 engine. 4 with 188k. It is now at 223 000km and after doing the injectors, glowplugs, radiator, cover gaskets, steering pump twice, and various other fixes to this motor I am wondering what on earth did I buy!! But it was a good price and no matter I still love the thing. Ford introduced the 6. I used the Lucas Injector cleaner for the first time in 2016 on my 2003 5. Purchase my first 2016 Toyota Tacoma and the engine has ticking noise and no one will do anything about it. had something changed that's near front of the engine that's connected to the auxiliary belt (don't ask me what its call cos i don't know lol ) anyway that didn't work. Biggest problem will be injector tightness, you might need a special pulley tool to get the injector out so soak it thoroughly first to loosen. Raj said that the injector nozzles were going too. It may be coincidence but i have gone from oem oil filter to GUD (which seems what everyone uses here) and am using 15w-40 Delo 400 oil once again what has been recommended to me by those here in SA. Only audible with the windows down too. Some vehicles equipped with a 4. 7 Powerstroke Diesel Common Issues, Problems, and Tips. It sounds like a valve adjustment is required. 7L diesel equipped vehicles may exhibit. When the feed to No 2 cylinder was spitting diesel the noise went, and reappeared when re-tightened. Could be an injector I highly doubt it, but ya never know. For the 2nd time. If this is your first visit, be sure to check out the FAQ by clicking the link above. I've read on other threads regarding engine noise in the 6. Faulty injector(s) Probably the biggest result of injector failure for Common Rail injectors is due to the injectors having excessive return flow or back leakage. 5L Does anyone else hear this?. Ticking could just be some vale train noise, or it could be a sticking injector or similar. ) But the rattling noise is still present after replacing those. The following suggestions are listed for your assistance. The first time in to the dealership they replaced the pressure pump but didn't do anything. The noise goes away after a few seconds. 0 Power Stroke. The lifters and injectors are loud on these 5. If the injector makes a sharp clicking noise it's good. Replied by EricTheCarGuy on topic Clicking near fuel injector A valve job is different than a valve adjustment which is what I'm recommending you check. Here's the breakdown: $25 for Hydraulic lash adjuster (HLA) (P# 13230) $25 for set of valve cover gaskets (both sides) Doing this "repair" was super easy, and could probably be done for just the cost of gaskets. Am trying to work out the source of the heavy knocking noise on this Jeep Diesel engine (see video link below). It seems to be less noticeable once the engine gets to fully warmed up temp, but it is still there if I listen carefully. Intermittent Ticking Noise Discussion in '6. If it is making a noise you should be able to feel it. He said the sure way is to block the rail using a plug & remove pressure to the suspect injector by taking the line off eliminating high pressure to know for sure. The noise is most audible while sitting in the passenger compartment with all the doors and windows closed and the engine at idle. With the treatment, it helped quiet them down so much, I could barely hear them, and it help with the overall noise level as well. A mechanic diagnosed the source as bad harmonic balancer and idle pulley. Fuel injector LOUD ticking? What does it mean I have a ticking noise coming from my engine so I used a stethoscope and listened all around everywhere and it seems as if it's coming from an injector #4 I think it is?. After I recently serviced my truck there has been a light ticking noise coming from the engine, which seems to remain the entire length of a journey. The compression was perfect and not piston slap I know that sound. Got a 09 335i which has a ticking noise on start up, gets quieter once engine is up to temperature but is still there. The fuel system on this engine includes the fuel tank, mechanical fuel pump, fuel filters, fuel line heater, injectors and fuel lines. I have done an oil change and now have a ticking noise. I would like to know if it is normal or not before I put my Cobb parts on. The garage replaced the lifters, cylinder head gaskets, etc, and carried out full inspection 2 service but the ticking noise was still there. We were hoping a purge would be enough to clean out the pump, without having to do a costly rebuild. Virtually all diesel engines use direct fuel injection. When I inspected it, it sounds like its coming from the fuel rail area. Hello, you will hear a certain amount of fuel injector ticking noise from this 2. It is the same whether the engine is hot or cold. In fact, it can signify normal engine operation. There are three main sources of noise on most vehicles that enter via the antenna. For example, if your car is powered by a fuel-injected engine, the fuel injectors may occasionally make a ticking sound, telling you they're firing properly. All BMWs direct injected motors are noisy, it is normal for it to sound the way they do in the video. Now I have this ticking but it definitely is just when its cold. The noise usually is most noticeable at the rear of the driver's side front wheel well. That slight noise disappears once the car is moving. TDI Engine Clicking noise VW MKIII-A3/B4 TDIs. It is often referred to as Typewriter Noise because of its similarity to the sound of random typing on a mechanical typewriter. The following suggestions are listed for your assistance. This is especially true if your car is in warranty. Depending on vehicle usage, the anti-foaming agents are depleted in 3000-5000 miles. The sound is the lifters and it's normal due to the red sport having direct port injectors, similar to a Diesel engine and similar to the noise of a Diesel engine. as soon as the engine is running for a couple of seconds the noise goes away. Loud ticking noise from engine - sometimes. I imagine the other three injectors will soon fail. These noises are normal and no repair is required. I did all my research and I found that it was an issue with one of the cylinder heads. Fuels that contain high amounts of ethanol or that are low octane may not properly lubricate the fuel injectors and can lead to a slight tapping or ticking noise. Some vehicles equipped with a 4. thought it might be the IP but did a diesel purge last weekend on the IP with no effects. 9L Commonrail Cummins Diesel Bosch Fuel Injector, that has been remanufactured by the same company who built it new, Bosch. They then tested the injectors and found one out not working correctly. The most common culprit behind a high pitched banging noise is an engine issue, however, it can often be something as simple as minor belt replacement. You can make simple adjustments on your tractor that will improve its operation and save you the time and expense of hiring someone to do it for you. It 'seems' to be coming from the engine rather than the pump - as if a pump setting/problem is causing the knock rather than anything physical within the pump. In most cases, diesel purge will quiet all the noises related to your injectors and will soften up the knocking noise as well. sulphur content that they were designed for. Engine ticking or misfires seem to be happening on cylinders 1, 4, 6 and or 7 on the effected engines. The valve that opens may have a sort of ticking noise with the timing. To me, the injector ticking sounds more precise and defined, whereas the exhaust ticking has a "mushier" ticking sound and is particularly obtrusive if you drive with the window open alongside a concrete barrier or through a tunnel. If you can hear ticking during take off, you may be hearing valve train noise as described in the article. Ticking noise in 1HZ diesel motor. In the forum you will find an informative tech area, a place for Member’s journals, Vendors with special Members pricing, and more!. And took the car for a spin (2g gst) car has some hesitation. its squirting once or a constant stream which when the piston compresses and ignites the fuel. tell us about your fuel mileage. Your problem is usually a bad injector. 7L Diesel - Reductant Injector Ticking/Tapping Noise Some 2011-2019 F-Super Duty 6. Â Engine is back to normal, but here is a stange thingmy Drag Comp went breasts-up last night! Â Not only do I have no power on levels 1 and 2 (any sublevel setting), but I have LESS power than with the box completely off! Â Can only get 30 psi and no smoke! Â Turn the box off and all the injector. Right as the noise goes away the engine sounds like it is switching to/from something, similar to an A/C compressor switching on/off (again, A/C was off during this video). Unfortunately, I recently had the IP rebuilt by Raj at Fred Holmes. It's not the typewriter tick, that's for sure. The 2016 Tacoma's 3. The injection noise is actually quieter after the truck is wamed up. New years eve for 2017, I was replacing injector #6. This rapid descent to carbon h3ll can occur because of multi port fuel injection. It only happens between 1500 - 2200 revs. when i start the truck at idle I can hear a light taping noise. So long story short, he's putting all 7 injectors back in my truck and I"m only paying for the replacement of one injector. I own a 2013 2500 diesel with a G-56. Half into the second bottle purchased, my #1 injector failed, a week later #5 failed. They must force the gas through over 1,000psi of pressure into the cylinder. tapping noise. 4L 4 cylinder engine. I had a loose belly pan where all screws have fallen out, but I was able to secure back two ones since they were still there. 7L diesel equipped vehicles may exhibit a customer vehicles exhibiting this noise with other ticking noise at idle after an engine oil change. Early failure just proves you purchased improper* gasoline or didn't perform mainteance correctly. Someone that was. Uncontrolled combustion in Petrol engine is known as knocking and in Diesel engine its called as detonation. If the engine has a carburetor instead of fuel injection it probably has a mechanical fuel pump mounted to the engine. Car is on 100k now. There is a very loud clicking, almost sounds like electricity arcing. Hi this is the second set of the fuel injector on this diesel engine,I talk to the different mechanic on dealers an privet shops and ask what is this problem and say is because the fuel,the used,how you drive,etc but no body say what is the reason, my problem is this injector set is not like replace like a set the spark plugs on gas engine is much money $5600, and I not the only person, I. I applied it minimally to my fuel tank on fill up. 5 you dont have the lb7 motor which was known to have all the injector problems, im not saying that the injectors are not the issue however. We look forward to working with you to keep your diesel vehicles on the road. One of the most common reasons is the car is low on oil. 7l diesel equipped vehicles may exhibit a ticking noise at idle after an engine oil change. Oil cooler now replaced and coolant flushed. It gets louder if you accelerate but never goes away even on tick over. I always wear hearing protection when running the tractor. 5 hrs later, that annoying, sounds like a diesel engine noise my 2. The difference is a diesel is designed for this "detonation" to happen constantly, while with a gasser detonation is a sometimes-destructive event. Getting a knocking noise from my engine and the diagnostic results from my mechanic is stating bad fuel injectors causing a misfire in cylinders 4,5,8 is that possible a knocking noise could be cause. After time and use, these spool valves will start to weaken. Average failure mileage is 50,600 miles. GM installed the 6. This noise is much louder than the typical ticking noise of a direct injection motor. Thinking of swamping injectors around and testing for sound. with the screw driver method what are in indications that you. the noise got a little quieter after doing the head. Can bad fuel injectors cause a knocking noise in your engine? 1 Answer. This cycle has been going on for about. About two years ago I bought my 2012 Jeep Wrangler sport with a 3. 2 ounces of AR9100 for every quart of regular engine oil. In Automotive Noise, Beginner Info, Buyers Guideby admin March 29, Quiet Noisy Lifters: In this post, I’ll walk you through the step by step methods that will help you to quiet noisy lifters. It's not normal knock - it's pretty damn loud.