valve noise?
06-21-2007, 12:37 AM
#1
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Car: 1988 Pontiac firebird
Engine: '93 LT1
Transmission: Built 700R4
Axle/Gears: 3.70 9 bolt
valve noise?
again, i'm working out the bugs on this '93 LT1. there is a noise comming from the passenger side valvetrain. also, the pass. side gets real hot, real quick. i'm mean, the pass. header is too hot to touch in under a minute, while the driver side header is still touchable.
this heat is causing everything to get hot...the valve cover gets too hot to touch for more than 1 second after some time ideling. the wires are getting hot that are between the valve cover and intake. the temp. is staying low and the fans are kicking on high.
the noise is hard to describe, but here it goes: its not a pinging. its not a ticking. its not a clicking. it kinda sounds like rhythmatic poofs of pressurized air. its hard to pinpoint since its running on no exhaust except for the headers and y-pipe. the rest of the exhaust is going to be on by saturday.
this heat is causing everything to get hot...the valve cover gets too hot to touch for more than 1 second after some time ideling. the wires are getting hot that are between the valve cover and intake. the temp. is staying low and the fans are kicking on high.
the noise is hard to describe, but here it goes: its not a pinging. its not a ticking. its not a clicking. it kinda sounds like rhythmatic poofs of pressurized air. its hard to pinpoint since its running on no exhaust except for the headers and y-pipe. the rest of the exhaust is going to be on by saturday.
06-21-2007, 12:56 AM
#2
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Car: 1991 Pontiac Firebird
Engine: 305 TBI
Transmission: 700r4
Axle/Gears: 3.42 posi
Re: valve noise?
not quite sure, I know this sounds dumb, but it could be a loose valve?
06-21-2007, 11:35 AM
#3
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Car: 1988 Pontiac firebird
Engine: '93 LT1
Transmission: Built 700R4
Axle/Gears: 3.70 9 bolt
Re: valve noise?
never heard what a loose valve sounds like, but it would make since. i haven't taken the valve cover off yet...wanted to get opinions first, and let it cool down.
06-23-2007, 03:37 PM
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Car: 1988 Pontiac firebird
Engine: '93 LT1
Transmission: Built 700R4
Axle/Gears: 3.70 9 bolt
Re: valve noise?
well, i still haven't looked into it, and i haven't been driving it. however, i fixed the heat problem. the noise has now progressed into a ticking. i'm going to let it cool off, again, and then look into it. any sugestions??
06-23-2007, 07:24 PM
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Car: 91 RS
Engine: LT1
Transmission: T56
Axle/Gears: 3.42 LSD
Re: valve noise?
Sounds like it might be an exhaust leak were the headers meets the cylinderhead. Look for blackining or see if you can't just feel the gases.
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