Question about 2003 Chevrolet Impala

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MY CAR IS MAKING A KNOCKING NOISE AFTER YOU CRANK IT. WANT TO KNOW IF IT COULD BE THE LIFTERS? THIS STARTED A FEW MONTHS AFTER I HAD THE OIL CHANGED.

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Check oil level .was correct oil put in engine

Posted on Oct 13, 2009

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My car is making a knocking noise how do i fix that.

Posted on Nov 05, 2012

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1 Answer

Can lifters be replaced


Oh yea, lifters can be replaced , best if you replace cam an lifters together ! Loud knocking is not usually associated with lifters , they usually make a ticking noise ! Knocking noise is most usually in the bottom of the motor , main or rod bearings . most of the time rod bearings !

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Check the oil pressure manually with a gauge. Make sure you have oil pressure. Perhaps you need a new oil pump, or new lifters. Get a professional opinion from a non interested party. Save money, get a diagnosis.

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I got a 2005 Chevy Cavalier, after forgetting to change my oil and it running low, I started to get a knocking noise in the top part of my engine. We checked the lifters, they were fine, what else could it...


Top of the engine could be a piston wrist pin, or a broken or stuck ring-try adding some Marvel Mystery oil in the crank case, if that does not work, go with a heavier oil when doing an oil change-are you certain it is not a rod knock, because that is the most common result of running with very low oil-no matter what, I hope it is not as bad as it sounds.

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Mitsubishi 3L V6 engine knocking.


The knocking noise has to be a deep knocking noise if its the crank bearings . If the oil is very gooey the oil was never changed properly at the mileage or months as required. Also if the oil is thick as you state it must have 15,000 miles or more on this oil. 10,000 miles the oil will still be thin if never overheated. I suggest this engine be completely disassembled and inspected if you plan to keep it. You will find wear to more to it especially the cam shaft, lifters, rocker arm as so on. for the oil never lubricated the engine enough to save this engine

Apr 20, 2010 | 1995 Mitsubishi Diamante

2 Answers

Knocking noise from valve lifters , car was low on oil replaced oil will it correct itself


These engines were overhead cam.If you did put the oil back in as you said and the noise went away,no initial problem.The noise from the lifters, if its still there, is a ongoing problem.Maybe just an adjustment of the lifters needs to be done.Hope this helps

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2 Answers

2003 Jeep Liberty. Changed oil, running very rough and dies.


Buy some Marvel Mystery oil from Auto Zone and add it to you engine oil. Keep an eye on your engine oil level everyday with the Marvel in there and change the engine oil every 3000 miles. Hope the Marvel will clean out the lifters for you and the rest of the sludge in the engine. Do Not Use Engine Flush!!!! There know to eat the seals and kill engine sensors.
The EGR could also be stuck with carbon build up and may need to be cleaned or replaced. Try doing this, turn your radio off and disconnect the battery for a min, turn the ignition key to the run position and re connect the battery then start the liberty. That should reset the air idle control valve
Let it idle down and then go for a test drive after it warms up. Good luck and keep me posted, while your at Auto Zone have them scan your liberty for any DTC codes. Be glad to help.

May 31, 2009 | 2005 Jeep Liberty

1 Answer

When you start the engine runs fine at idle but when you increase the RPM to 2000 you will hear a knocking sound from the engine.It sounds like the cams or the crankshaft. The engine was not running for...


Crank and cam make different noises when going bad, however if the crank is bad it will knock all the time even at idle. From what you told me it seems like the lifters are not making pressure, after all the car was sitting for 4 years. What you can do is to drain some of the engine oil about a quart, then fill it with some trans oil yep I said tranny fluid and let it run for about half an hour. This will wash out the lifters and hopefully take care of your problem. Oh, don't forget to drain and fill the oil again after noise goes away.

Mar 18, 2009 | 1987 Toyota Supra

3 Answers

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Sounds like a connecting rod bearing problem. I would have a pro. listen to it.

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1 Answer

2000 saturn upper engine knocking


noise is caused by lack of oil to lifters, or worn timeing chain. if noise is from lifters it should go away wit proper oil level, if still there needs timeing chain.

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