Engine knock

10

Asked by Feb 12, 2017 at 11:29 PM about the 2009 Nissan Altima 2.5 SL

Question type: Maintenance & Repair

My nissan altima  engine knocks while
accelerating.  Under 20 mph it's fine but over that it
knocks.  Any thoughts.

9 Answers

87,095

You need to verify the knock, but usually it is a rod knock in the engine.

10

I don't ribbing l think it's a rod it's not that type of sound. It sounds like something else. I'll check.

10

It's more of a thumping sound.

87,095

Just take it to a garage and have someone take a listen. May not be that serious then.

87,095

Can you be more specific on the thumping sound? What part of the engine is it coming from? Or is it from somewhere else in the car, if it is then I can take a good guess.

10

Sounds like the back of the engine. It even sputters when while making that sound.

87,095

Then you could have just an engine miss causing the engine to rock a bit, and may be the exhaust just hitting something making the thump noise. It may be it just needs a tune-up.

120,085

Maybe the engine or transmission mounts are bad.

10

Ok thanks

Your Answer:

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