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jmac87tt
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FEB 16, 05:33 PM
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Has anyone ever come across a noise like this ? Haven't been able to narrow it down yet. L67 m90, there was an exhaust leak I fixed that, blower coupler seems good ran it with no belt still the same noise. Im down to lifters, injector, or rod. I'll take any suggestions though, oil is new and at the proper level
**I got no idea why the video won't attached I've tried it in the 3 options this site allows when you tap on the camera icon[This message has been edited by jmac87tt (edited 02-16-2025).]
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1985 Fiero GT
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FEB 16, 05:39 PM
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| quote | Originally posted by jmac87tt:
Has anyone ever come across a noise like this ? Haven't been able to narrow it down yet. L67 m90, there was an exhaust leak I fixed that, blower coupler seems good ran it with no belt still the same noise. Im down to lifters, injector, or rod. I'll take any suggestions though, oil is new and at the proper level |
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And what does this noise sound like?
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Patrick
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FEB 16, 05:57 PM
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| quote | Originally posted by jmac87tt:
I got no idea why the video won't attached I've tried it in the 3 options this site allows when you tap on the camera icon
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There's a "camera icon"? (I use a PC and don't see any icons.)
To embed a video here, you need to upload it to YouTube, copy the URL from the browser, and then insert the address (with no spaces) between [youtube] and [/youtube]
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jmac87tt
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FEB 16, 06:07 PM
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Patrick
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FEB 16, 06:46 PM
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| quote | Originally posted by jmac87tt:
Let me know if that works I've never done a YouTube video either
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That's pretty good for your first time.  To embed the video, as mentioned earlier, use the browser's URL address for the video at YouTube. (Click EDIT on this post to see how I've done it.)
[This message has been edited by Patrick (edited 02-16-2025).]
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82-T/A [At Work]
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FEB 16, 06:57 PM
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It's almost like a hissing sound that's consistent with the engine. Does the sound decrease after the engine fully warms up... or I should say, does the sound CHANGE when the engine fully warms up?
To me, it sounds like an exhaust leak...
Any chance you can record another video (just like this one), but be in the car and give the engine a little rev here and there (not crazy) just a little rev to see how it sounds with RPM changes?
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jmac87tt
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FEB 16, 07:27 PM
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Yea I could prob do another video tomorrow. The exhaust is very short I thought about just dropping it to see if the sound changes to eliminate it down to just the manifolds but there are no signs of leaks, black spots soot or burns etc. I found the collector leak by doing a smoke test but stopped at that. I don't believe it's a vac leak I have 18-20" vacuum at idle and that's where the noise is most prevent. Almost like something slapping
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cartercarbaficionado
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FEB 16, 08:14 PM
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sounds kinda like spark knock but the worrying part is it sounds like the 2001 gtp my buddy had (3800 series 2 with the supercharger) which had a very similar sound until the trans blew up.
you could try putting the clutch in and see what happens?
edit: just realized its the same sound as the 88 Tangerine menace. its your getrag making that sound[This message has been edited by cartercarbaficionado (edited 02-16-2025).]
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Patrick
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FEB 16, 08:19 PM
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Sounds more to me like a collapsed lifter, but it's difficult to determine listening to a video.
| quote | Originally posted by Patrick Here:
...spring for a whole five bucks and get a mechanic's stethoscope.
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[This message has been edited by Patrick (edited 02-16-2025).]
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cartercarbaficionado
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FEB 16, 08:22 PM
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| quote | Originally posted by Patrick:
Sounds more to me like a collapsed lifter, but it's difficult to determine listening to a video.
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does it? uh oh. (this is pertinent to a car i sold)
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