EITHER Bad Rings or bad valve seals right???????????
Thread Starter
Launching!
Joined: Dec 2008
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From: SAN DIEGO
EITHER Bad Rings or bad valve seals right??????????? hey guys ive been trying to figure out my cars smoking problem lately so i took off the intake manifold and found a lil puddle of oil behind all the valves that where closed..now this motor has only 30,000 miles on it. so i wonder if the shop that did the work either messed up on the bore for the piston/rings or valve seals took a **** already please any help would be great becaus i want to take the motor apart asap sadly.... thanks for your help!
Are you running the pcv system correctly with a catch can ?
If not, that's probably where the oil is coming from.
To verify, disconnect and plug the pcv inlet to the intake and vent the crankcase. Drive it and see if it smokes.
If not, that's probably where the oil is coming from.
To verify, disconnect and plug the pcv inlet to the intake and vent the crankcase. Drive it and see if it smokes.
Thread Starter
Launching!
Joined: Dec 2008
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From: SAN DIEGO
Yes ive tried everything only thing left is a ls6 valley cover
TECH Enthusiast
Joined: Apr 2007
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From: 336 NC
Thats alot of oil. The only way I would consider the rings being bad is if they had so much blowby that it was overwhelming the PCV system. Valve seals could explain the puddling of oil after shutdown. Then again if you had massive blowby the PCV could be coating the intake runners with oil and it puddling on the valves after shutdown too. Like others said disconnect the PCV and put a breather on. Then drive the car awhile and recheck if you still have this issue.
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Launching!
Joined: Dec 2008
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From: SAN DIEGO
Thread Starter
Launching!
Joined: Dec 2008
Posts: 209
Likes: 0
From: SAN DIEGO
Thats alot of oil. The only way I would consider the rings being bad is if they had so much blowby that it was overwhelming the PCV system. Valve seals could explain the puddling of oil after shutdown. Then again if you had massive blowby the PCV could be coating the intake runners with oil and it puddling on the valves after shutdown too. Like others said disconnect the PCV and put a breather on. Then drive the car awhile and recheck if you still have this issue.
Is this a ls1 block with a 4" stroke crank to make the 383ci ? What heads do you have on this motor ? Head gaskets are determinded by the cc size of your heads.
Thread Starter
Launching!
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From: SAN DIEGO
Thread Starter
Launching!
Joined: Dec 2008
Posts: 209
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From: SAN DIEGO
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Teching In
Joined: Feb 2011
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From: Huntington, TX
Mine did that in January, and new valve seals fixed it. Same oil on top of the closed valves....valve seals need to be replaced. I even r&r'd them once, but apparently I installed them wrong and the machine shop had to install them again.
Thread Starter
Launching!
Joined: Dec 2008
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From: SAN DIEGO
[QUOTE=sfc rick;16241196]Mine did that in January, and new valve seals fixed it. Same oil on top of the closed valves....valve seals need to be replaced. I even r&r'd them once, but apparently I installed them wrong and the machine shop had to install them again.[/QUOTE]
Wow sounds exactly like what happened to me!
Wow sounds exactly like what happened to me!
Your pistons look cleaner than i would have expected to see. It looks like you have GMs MLS head gaskets. Can you find a casting # on the heads ? I would take your heads to a machine shop and let them clean and inspect the heads. Replace the valves seals, check the guides, and let them vacuum test the heads..