Question about 2000 Isuzu Trooper

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HAVE A KNOCKING SOUND IN THE ENGINE.???.. - 2000 Isuzu Trooper

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Might need an oil change. There is a product called Lucas Oil Stabalizer, it is great. Just replace one quart of oil with it, it really smooths the idle and quets things down.

Posted on Aug 01, 2010

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Posted on Jan 02, 2017

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What would a knocking machine gun sound be under hood. I just started it and somewhere under the hood is a LOUD Knocking like a Machine Gun sound.


Is it metalling sound ? if that's the case then don't drive it .. you might be having issues with connecting rod or the bearings in the both cases engine will seize. Consult a auto technician, but you wont have engine light on due to this.

If it is knocking due to misfire (which is mostly the case as the engine light is also on) .... than find which cylinder have the issue then clean or replace the spark plug. If you can get a scanner to read the car computer it will solve the issue in a blink. Otherwise start the engine ... open the hood .pull out spark plug connector one by one and notice the change in sound... the one that is bad will have no effect on the sound.

Sep 06, 2015 | 2004 Dodge Durango

1 Answer

There is a knocking sound in my engine


sounds like a rod is knocking, check oil to make sure it is full. If it has plenty of oil then if it checks out ok, you probable need new engine.

May 18, 2015 | 2005 Mitsubishi Colt 1.3

1 Answer

I have a 2001 Chevy Malibu automatic when it is in first and second gear it makes a knocking sound but when it shifts to third gear it stops I don't think it's a rod knocking because it isn't consent


More information is needed to help with this.

1. Is the knocking coming from the engine, the transmission or elsewhere?

2. If you believe it is from the engine, start the motor and put the auto in neutral and gradually depress the accelerator pedal to gently increase the engine speed for 2 minutes. If you can replicate the knocking noise then obviously it is engine.

3. If the knocking is from the engine check the engine oil level which you should be doing frequently anyhow to ensure you top it up and do not run the oil level low and destroy the motor. (Failure to have the engine oil changed at the required intervals can also result in excessive wear and damage to engine components.) If you do this check and find the oil level is very low then advise here when you repost your query with more information about the source of the knocking sound.

4. Also indicate in your post what grade (octane rating) of fuel you are running the engine on.

Apr 14, 2014 | Cars & Trucks

1 Answer

Sound inside the engine


Does the knocking sound increase with engine speed? Check all the things run by the belts, like A/C, alternator, etc. by removing the belts and starting the engine. If there is no more knocking, then check those components. If the knocking is still, you may have an internal engine problem like main or rod bearing failures. Check the engine oil for any metal flakes.

Mar 31, 2014 | Hyundai Accent Cars & Trucks

1 Answer

Toyota solara engine knocking and car cutting off


Meloe77, there's a high possibility you have a mechanical failure inside the engie causing the knocking sound. (Check the oil?)
The reason for shutting off is because the knock sensor can hear it, and the powertrain control module (PCM, herefore) is trying to detune the engine to eliminate the sound, (as if it were caused by bad gasoline.) The fact that there is a mechanical knocking sound, means that the sound cannot be eliminated by detuning of fuel or spark mapping, therefore it starves for fuel and/or spark causing the engine to stop running.
My recommendation: Have the vehicle TOWED to a reputable mechanic and ask him if its possible that I'm right.

Jan 22, 2013 | 1999 Toyota Camry Solara

1 Answer

Engine Knocking / No Power


Dosent sound good. Oil light on means you lost oil pressure. and the knocking sound is the damage done due to low pressure. Start looking for another engine or another van.

Dec 30, 2011 | 1993 Plymouth Grand Voyager

1 Answer

Knocking sound


Knocking sound is bad and most likely time for a new engine. The knocking noise your are hearing is the pistons knocking against the engine block when it goes up and down.

Inspect the level of your engine oil to make sure you have enough oil in there.

Thank you for using fixya and good luck

Aug 24, 2010 | Toyota Tacoma Cars & Trucks

1 Answer

1979 cad fleetwood brougham knocking sound from,engine


Sometimes collapsed lifters or loose rocker arms can cause knocking sounds in an engine. However, the fact that there was a possible loss of oil pressure and that the knocking gets louder as the rpm's increase, would indicate that there is damage to a connecting rod bearing and possibly the crankshaft. If the latter is the case you are looking at a fairly substantial repair bill.

Apr 14, 2009 | 1990 Cadillac Fleetwood

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