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slight knocking...

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Posted by: EmpireSix

There is a slight knocking i guess I would call it coming from the engine. It's not bad and performance isnt affected....yet. Could this be leaky vcg's ? Or is this a sign of bigger problems. It is due for an oil change though.

Posted by: AndrewCoja

What kind of gas are you using?

Posted by: EmpireSix

93 oct, although sometimes I use 91.. depends on where I get it from. Detonation ?

Posted by: joegr

I always get 93, but I found that not all 93's were equal around here. There is one Shell station that I would get a slight knock on light acceleration after a fill-up. After I figured out the pattern, I stopped ever getting gas at that one station, and haven't had any knock since. Just a thought...

Posted by: steagle

does the car knock dramatically and does it happen at idle or when braking? i

Posted by: EmpireSix

Quote:

Originally Posted by steagle

does the car knock dramatically and does it happen at idle or when braking? i

no, its nothing dramatic.. it goes up and down with the rev's.. but it smooths out at higher rpms. it does at idle too.

Posted by: steagle

you may want to pop out the coils to see if there's any oil in the wells, but more than likely its the gas

Posted by: chocolat1701

it sounds like the coils are going bad thats what happens when they start going bad

Posted by: EmpireSix

thanks guys, ill pop them out this weekend