Strange noise please read....
Thread Starter
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Joined: Feb 2003
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From: Pasadena, CA
Strange noise please read.... On cold start up I have this loud ticking noise coming from my engine. The strange thing is, it just STARTED at 5,000 miles. After about 5-10 minutes of driving, it goes away. Im thinking piston slap, but WHY would it start now. Is this normal.
Thanks,
Mark
P.S. FWIW, this noise never was never there until after I had my ASP crank pulley installed a couple weeks ago. I don't see how this could cause the problem though.
Thanks,
Mark
P.S. FWIW, this noise never was never there until after I had my ASP crank pulley installed a couple weeks ago. I don't see how this could cause the problem though.
Thread Starter
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Joined: Feb 2003
Posts: 430
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From: Pasadena, CA
Re: Strange noise please read.... I took my car to Chevy and here is the verdict: Road tested vehicle and can hear sound customer is reporting. Called GM technical assistance and they said sounds like the normal characteric from roller lifter guide bars. No codes in PCM. No change when balance test performed. Noise diminishes when warm. No other problems heard.
I talked to the SERVICE MANAGER and he said if by chance the noise gets worse, bring the car back and they will be happy to investigate it. At this time they found nothing abnormal.
Does this sound LEGIT??
I talked to the SERVICE MANAGER and he said if by chance the noise gets worse, bring the car back and they will be happy to investigate it. At this time they found nothing abnormal.
Does this sound LEGIT??
Re: Strange noise please read.... my car has always piston slapped till 210'
it runs like a bat out of hell and no problems to report, so i can only assume its perfectly fine.
I would agree with gm that if it gets any worse then go back, cause if its plain piston slap, it shouldnt
it runs like a bat out of hell and no problems to report, so i can only assume its perfectly fine.
I would agree with gm that if it gets any worse then go back, cause if its plain piston slap, it shouldnt
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From: Earth
Re: Strange noise please read.... Sounds like good 'ole piston slap to me. Mine started it around 5,000 miles. At 35,000 miles it got much worse. It sounds like a gosh damned diesel until it's up to temp.
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Joined: Mar 2003
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From: jonesville, MI
Re: Strange noise please read.... Mine has had the piston slap since the day I picked it up with 152 miles on it. It's there all the time- whether the engine's cold or hot. Doesn't seem to have gotten any worse, but it is very annoying to me. Like previously mentioned, it sounds like a damn diesel. I would not call the piston slap noise a "tick" noise, though. It's a deeper rattle type noise. Maybe the "tick" noise is indeed coming from the valve train.
Thread Starter
TECH Regular
Joined: Feb 2003
Posts: 430
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From: Pasadena, CA
Re: Strange noise please read....
Mine has had the piston slap since the day I picked it up with 152 miles on it. It's there all the time- whether the engine's cold or hot. Doesn't seem to have gotten any worse, but it is very annoying to me. Like previously mentioned, it sounds like a damn diesel. I would not call the piston slap noise a "tick" noise, though. It's a deeper rattle type noise. Maybe the "tick" noise is indeed coming from the valve train.
wrong. Just have to deal with these noisy LS1's.
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