Stuck lifter? - Page 5 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-18-2010, 11:41 PM   #41
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A guy on the w-body forum also suspected an exhaust tick.

A chain flopping around would have to be hitting something in order to create that kind of noise, and I imagine I'd have more serious issues than just an idle vibration. Then again, I've never removed it so I couldn't say for sure. Part of me just doesn't want to have to deal with removing all of the accessories, draining the coolant, pulling the harmonic balancer, and replacing the timing cover gasket. It sounds like a bit of a PITA. Here'* something I found:

http://i26.photobucket.com/albums/c1...996_L36_25.jpg

You'll notice in the above picture that the timing chain doesn't have a whole lot of slack, so even if the tensioner is a tad bit loose, the chain would have to be hitting **something**.

But I'll have a listen tomorrow just to be sure, since its getting late to be revving my engine.

The timing cover has never come off. The heads have 85k miles on them, and the rest of the engine has almost 215k miles on it. I can reproduce the sound pretty easily as well. Just rev the engine. The sound from the video is a fairly accurate description of what it really sounds like in person.

The job to replace the timing set (sprockets, chain, and tensioner) would only cost me $50 + shipping, but it just looks like a really annoying job to have to do. Then again, if that'* what'* wrong, I'll have to suck it up and just do it.

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Old 04-18-2010, 11:55 PM   #42
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Here'* video I found of a car with a loose timing chain

http://www.youtube.com/watch?v=ev5lx...eature=related

Its a different engine, sure, but its also a completely different sound.
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Old 04-19-2010, 12:05 AM   #43
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All the timing chain stuff I found on Youtube was OHC, in one form or another. I don't know if that is a factor, but I am trying to find a pushrod motor with timing chain noise.
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Old 04-19-2010, 12:54 AM   #44
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Don't bother. I drove out to the nearest high school parking lot, and revved my engine there for 15 minutes. I put my head as close as I could to the passenger side and the noise only got quieter. Its not the timing chain.

However, it did get louder as I put my head closer to the front exhaust manifold area. Furthermore, the engine is unusually loud from inside the car. I'm going to replace that flex pipe and go from there. Is there a chance that a bad spark plug or wire is arcing and causing that noise?
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Old 04-20-2010, 08:28 AM   #45
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read this post then you can make a definitive judgement on valve train.


https://www.gmforum.com/2000-2005-90/2000-ssei-tick-288219/
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Old 04-20-2010, 08:29 AM   #46
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sorry last post of page
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Old 04-20-2010, 11:33 AM   #47
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None of those symptoms or scenarios describe my problem. I guess it must not be the valvetrain.
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Old 04-20-2010, 09:32 PM   #48
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Quote:
Originally Posted by Danthurs View Post
The tick I'm hearing sounds like a exhaust tick. Look on the back of the engine. There'* a pipe that goes from the rear exhaust manifold and connects to the cat. That down pipe is a flex pipe. There'* a pipe inside that pipe and allows movement. If that'* rusted out, you will get a tick.
I think you should try Dans advice. If the wrap quiets down the noise than you've found your noise.
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Old 04-20-2010, 09:34 PM   #49
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Check for exhaust leaks on the manifolds as well. A leak or cracked manifold can make that kind of noise.
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Old 04-21-2010, 12:07 AM   #50
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Quote:
Originally Posted by Danthurs View Post
Check for exhaust leaks on the manifolds as well. A leak or cracked manifold can make that kind of noise.
I'll seafoam the car this weekend. If there'* an exhaust leak big enough to cause that noise, I should be able to see some smoke coming out of it.
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