Bad knocking noise on accsesory side

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Jonny Cash

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I just recently got my SC car tuned. I drove it a few miles being fairly easy on it. Everything seemed to be ok besides some sputtering from bad plugs once it warmed up..

Then I started hearing some sort of bad puttering noise on my pass side, rpm related.. At first I thought it was the blower, but looking further, the noise seemed to go lower.

Got home, first thing I did was check the dampener. (A few months back I found some cancer forming on the old dampener, I replaced it with a good one, Ive drove many miles since and its been fine) The crank bolt was nice and tight. Then I took the rear belt off and spun the PS pulley, and WP pulley. The WP pulley seems to wabble slightly, but it spins with ease with no noise/grindage. Same with the PS.

I wouldve tried to run the car without the belt, but Im not sure that the noise wouldve came fast enough to not **** my battery. The noise certainly sounds lower than the alternator so I crossed out that too. I havent ran the car with the new plugs in, but Im sure (kinda) that its not knock related.

Ive heard the noise that a bad dampener makes when cancer starts, and it doesent seem to be the same noise. Is it possible theres' cancer forming even though the bolts tight?

Any ideas?
 
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Jonny Cash

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SASHO91 said:
Was it a fast knock? or slow?

Its not fast like a cam would be. It goes with crank speed. (RPM) Its noticeable at idle. Itll get gradually louder the higher the RPM. I pretty much ruled out any tensioners because the sound isnt there when cold. Its still possible I think though.
 
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SASHO91

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how many miles on the RB's? ( I hate to say it)

I dont think it could be the oil pump..... but.... :shrug:
 

93rev2sev

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This one is easy...your timing belt tensioner has relieved itself and your belt is flapping.
 

SASHO91

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:doh:
didnt even think about that... :slap:

yeah, that would be the first place i would check... (pull the covers)
 

SASHO91

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hmm...
Have you pulled the dampner off yet to check? It would probably be worth the 20mins to just take a look...
 

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