EITHER Bad Rings or bad valve seals right???????????
04-24-2012, 02:56 AM
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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!
04-24-2012, 09:38 AM
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Yes ive tried everything only thing left is a ls6 valley cover
04-25-2012, 08:40 AM
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I'm not an expert by any means, so take what I have to say with that in mind. I just don't see how bad rings could cause that. I would lean more towards valve guides and seals. IMHO.
04-25-2012, 09:14 AM
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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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04-25-2012, 12:10 PM
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04-25-2012, 12:12 PM
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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.
04-25-2012, 12:14 PM
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04-25-2012, 01:36 PM
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04-25-2012, 01:37 PM
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04-25-2012, 07:09 PM
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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.
04-25-2012, 08:58 PM
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[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!
04-26-2012, 12:18 AM
#20
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..