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Mechanical help? loud knocking coming from engine n vehicle wont rev over 3000rpm while driving.... just overall, sure it dont have anything 2 do with bearings... i guess it d fuel pump or injectors problem, plz help... 2L T diesel engine with electronic pump

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  • Cars & Trucks Master
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A loud knock is almost always a piston or bearing problem, or liquid in one of the cylinders that can not compress such as coolant.

Posted on Jan 17, 2013

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Posted on Jan 02, 2017

SOURCE: toyota hilux no fuel to injectors

im not sure on that particular vehicle but most trucks have a fuel pump shut off if the vehicle gets hit or is jarred real hard look in your book for the fuel pump reset button it is a inertia switch

Posted on Dec 11, 2008

  • 315 Answers

SOURCE: loud knocking sound, complete loss of power, 1991 300zx

Wont know till you take it to a mechanic for troubleshooting.

Posted on Mar 05, 2009

  • 1 Answer

SOURCE: Surf 1KZ-TE Diesel wont fire

I have the same problem. it just wont start one morning. can you please help me in case you have solved your problem already.

Posted on Apr 09, 2009

Larrysito
  • 73 Answers

SOURCE: diesel injector leaks air on 2002 jeep grand cherokee

There must by a copper ring if isnot under the jet it is y ....replace and tighten it .....

Posted on Jun 08, 2009

  • 1 Answer

SOURCE: loud diesel knock nissan terrano II head just replaced.

some black smoke comes out when i put foot down and loses power when goiong uphill i have a nissan mistral/terrano 2.7td

Posted on Aug 20, 2009

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2002 jaguar xj8 when I drive it won't go over 3000rpm


Jaguar wont rev 3000 rpm Questions & Answers - Fixya

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1998 Jaguar XJ8 won't rev over 3000 rpm ... Wont go beyong 3000 Revs s type 2001, wont go beyond 3000 Revs and it' in limp ... Question about 2002 X-Type ... My jaguar xjr8 year 2000 battery went dead started car went for short drive back ...

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1998 Jaguar XJ8 won't rev over 3000 rpm ... engine cuts out and shudders at 3000 rpm won't accelerateobd code p0332 2002 jaguar x type 3.0 l P0332 - Knock ... Car is boging out in park and will not go over ... driving, don't worry about it.

Rev Won't go up

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Dec 15, 2015 | Jaguar Cars & Trucks

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My engine starts but doesn't run (idle). when i rev it a loud diesel knock appears and the check light comes on. i need help please


It sounds like a serious internal problem. Most likely a broken piston rod or spun main bearing. The car should be towed to a repair shop for professional diagnosis. A cheaper option would be to have a mechanic friend come by and take a look. Either way I would advise against driving the car or even running the engine except for diagnosis purposes.

May 19, 2015 | Cars & Trucks

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Wont rev above above 3000rpm


Hi Anonymous, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Such as what kind of vehicle

Sep 01, 2014 | Cars & Trucks

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Holden rodeo 2003, wont rev over 3000rpm


run a scanner on the system to determine codes to diagnos problem

Apr 13, 2014 | 2003 Isuzu Rodeo

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Engine loud


If this is knocking is coming from within the engine, some possible causes could be using too low grade of fuel (regular vs plus or premium if your vehicle calls for higher grades), some timing issues, needing to replace your spark plugs (may have incorrect or worn out plugs), or plugs & wires if your vehicle has both (some do not), some internal combustion issues, or possibly even problems with rods/bearings. How's your oil pressure??? Are your gauges reading low? This can be a cause! Sometimes vehicles will "knock" if the oil level drops too low, or it may not knock until the oil in the engine has been depleted. (You could be facing serious engine problems if this happens!) If you keep your oil checked and at the accurate levels, and keep it and the filters changed regularly to ensure "clean" oil in your engine, this helps with lubrication of the engine parts, helping with lessening of the wear and tear on the engine, as well as extending the life of your engine. (It is also helpful to let your engine idle for a little while and warm up before driving (especially with rapid acceleration habits) to allow the parts to become lubricated, especially in cold weather). If you try upgrading to plus or premium fuel in your car, and it doesn't help, make sure your engine oil level is okay. If you're unsure, ask your mechanic to check things out for you. You may just need a good tune up. Regular service and maintenance is essential for your vehicle's engine and major components, and also to lengthen the life of your vehicle, especially the older your vehicle is and if it's considered a "high mileage" vehicle. I'm no mechanic but I grew up in a family of mechanics and do know a few things about vehicles. Hope this helps!

Mar 01, 2014 | Chrysler Cars & Trucks

1 Answer

I have an unnerving repeated knocking (louder than clicks) sound coming from my engine. the mechanic changes the main engine bearings but it won't go away. it goes away at high revs but very loud at lower...


I'm assuming your mechanic changed the rod bearings also. There is also a thrust bearing which keeps the crankshaft from sliding back and forth as it spins. Also check your flywheel/flex-plate, depending on whether your vehicle is auto or stick. Sometimes they crack and can cause a knocking sound.

Feb 16, 2011 | 2000 Mazda 626

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My ford contour 2.0L Fi Automatic- can't go more


The vehicle has a rev limiter. Will it rev over 3500 when you drive it? If no, then I would guess that the exhaust might be partially restricted. But the engine computer won't allow you to free rev the engine that high in park and neutral.

Mar 27, 2010 | 1998 Ford Contour

1 Answer

Ford focus car engine light coming on knocking


Go to Orielly auto parts and rent their OBD scanner. If you takethe vehicle to them they wont charge you for the scanner. The dealer will charge you $100 or more to check it for you. Depending on how loud the knock is I would not recomend driving the vehicle until you scan it. Once you scan it write down the codes and Oriellys can translate them for you also.

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Loud knocking under drivers right foot. Cant see anything under the car everything looks good. But can feel knocking agains foot when driving. Even when stopped at light can fell some kind of knocking and...


It sounds like a broken motor mount.
It may be a "lost" motor mount screw / nut.

Symptom? It probably makes more noise/thump when you make a sharp turn to right or left.
Also when you "rev" the engine...

Hope this helps!

Sep 06, 2009 | 2005 Nissan Altima

1 Answer

Loud knocking sound, complete loss of power, 1991 300zx


Wont know till you take it to a mechanic for troubleshooting.

Mar 05, 2009 | 1990 Nissan 300ZX

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