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| 2004 3800SC engine noise !? (Page 2/3) |
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Lou6t4gto
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NOV 06, 12:49 PM
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Lou6t4gto
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NOV 09, 12:34 AM
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installed new ls7 lifters, same noise. push rods perfect, 1.9 rockers perfect, 65 psi oil at an idle 75-80 at 1500. is a wrist pin or piston going bad a Normal malady of a 3800 ??? absolutely no exhaust leaks. don't want to scrap the engine for something I cannot find thanks
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Patrick
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NOV 09, 12:52 AM
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From what I've read here over the years from members with similar symptoms, I think Dennis might be on the right track.
| quote | Originally posted by Dennis LaGrua:
The flexplates on these engines can occasionally fail as well.
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Lou6t4gto
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NOV 12, 02:30 PM
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compression test- zip in #2- all the rest good. rockers, push rods, cam good. because it WAS running a (less than 3.4 pully), I'm thinking the piston is toast
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Gall757
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NOV 12, 03:25 PM
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head gasket? [This message has been edited by Gall757 (edited 11-12-2019).]
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Patrick
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NOV 12, 03:39 PM
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| quote | Originally posted by Lou6t4gto:
"RUNS" fine...
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| quote | Originally posted by Lou6t4gto:
compression test- zip in #2
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...
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Lou6t4gto
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NOV 12, 03:45 PM
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if it was a head gasket, there would be SOME compression, correct ? nothing(combustion or oil) into the water jacket/radiator. no steam from the tail pipes, losing no coolant., no water in the oil. (runs right at 180 degrees.) just no compression and a rapping noise. should have mentioned, this is IN a 97 GTP, and getting to the rear bank is a REAL hand cutting experience. I've dealt with a bunch of 3800SC in fieros (installed, rebuilt), alot easier in a Fiero than the GTP with headers !
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Lou6t4gto
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NOV 12, 03:58 PM
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when I said runs fine, I thought it was just a lumpy idle from the 1.9 rockers and 3" exhaust. what I meant was it has 65psi oil at idle and goes to 80 at 1500 (Not in the crank). it is only running on 5 cyl (obviously)
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DLCLK87GT
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NOV 12, 04:40 PM
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Before you start tearing it down, get a Endoscope/inspection camera that will attach to your phone, pull the plug and take a peek inside. You can get them for $20 or so off Amazon and have it tomorrow.
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Lou6t4gto
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NOV 12, 05:54 PM
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got one, never got a chance to use it. I don't Have a cell phone, but my wife does. will those things work on any cell phone ?
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