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Condensation in the valve covers???

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Old 01-21-2004, 11:43 PM
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Car: '01-Z71, 2ND GEN CAMARO, 3RD GEN Z28
Engine: 5.3, 383 STROKER, 350 TPI
Transmission: 4L80E, TH400, 700R4
Condensation in the valve covers???

I took the valve covers off tonight, never been off since new, 140K miles ago. It looks good under ther except for some slime looking residue on the top of the valve covers. I've seen what a blown headgasket looks like, this isn't it. No water in the oil or oil in the radiator . Do these stock valve covers create alot of condensation. Possible that just over time its created a film of it? You can tell that it is water, but not like a bad gasket or tons of water getting into it. The car had sat for about a year befor being started up and driven to my garage. Any thoughts? Thanks, Tim

Last edited by edge433; 01-22-2004 at 01:26 AM.
Old 01-21-2004, 11:51 PM
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Car: '01-Z71, 2ND GEN CAMARO, 3RD GEN Z28
Engine: 5.3, 383 STROKER, 350 TPI
Transmission: 4L80E, TH400, 700R4
Re: Condensation in the valve covers???

Originally posted by edge433
I took the valve covers off tonight, never been off since new, 140K miles ago. It looks good under ther except for some slime looking residue on the top of the valve covers. I've seen what a blown headgasket looks like, this isn't it. No water in the oil or radiator. Do these stock valve covers create alot of condensation. Possible that just over time its created a film of it? You can tell that it is water, but not like a bad gasket or tons of water getting into it. The car had sat for about a year befor being started up and driven to my garage. Any thoughts? Thanks, Tim
If this is a banned topic, where should it be? It's not the average water in the valve cover means blown headgasket, I've never seen a condition like this. Thanks again, Tim
Old 01-22-2004, 03:06 AM
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It comes from not running the engine long enough to evaporate the moisture present in the air inside of it.
Old 01-22-2004, 09:55 AM
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could also be combustion products from blowby and a less than perfectly functioning PCV system.
Old 01-22-2004, 10:02 AM
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well i have a theory...
if the engine sits with humid air in it, and then the outside air cools.... the valve covers cool and condensation forms...


but if you run the engine regulary, you wont have this problem... *shrug*
Old 01-22-2004, 12:31 PM
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Car: '01-Z71, 2ND GEN CAMARO, 3RD GEN Z28
Engine: 5.3, 383 STROKER, 350 TPI
Transmission: 4L80E, TH400, 700R4
Originally posted by Morley
It comes from not running the engine long enough to evaporate the moisture present in the air inside of it.
So thats what the slime looking stuff is? Makes sense. Thanks, Tim
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