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Burning 1/2 quart per day?

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Old 08-31-2007, 05:20 PM
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Default Burning 1/2 quart per day?

Hey guys,

My H/C LS1 with 108K on the clock has started to burn excessive amounts of oil. By excessive I mean that on startup I emit a large white smoke cloud, my exhaust tips have a coat of black that is a few mm thick, and my car has definitly lost some power.

Recent mod was having a shop install my heads, but this started about 2 months after the swap.

Any idea to what it can be?

I was thinking rings or valve seals?
Old 08-31-2007, 07:12 PM
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Ahhh wow. time for a tear down and inspection.
Old 08-31-2007, 07:37 PM
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Did they use teflon thread sealer on the intake rocker bolts, assuming the heads have been ported which exposes the threads on the intake runners ?
Old 08-31-2007, 08:12 PM
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No idea on that. I can take the valve covers off later and find out. Can I re-use the gaskets or should I get new ones before I start off on that job?
Old 08-31-2007, 08:48 PM
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You can re-use the valve cover gaskets as long as they are in good shape. Just remove one intake rocker bolt to see if it has thread sealer on it, next I would get a flashlight and shine it down into the hole to see if it is a blind hole or if it goes all the way through into the intake port. If it goes all the way through , the heads have been ported and the rocker bolts will let oil leak into the intake ports if no thread sealer was used. It's worth a shot before just tearing into the engine, sometimes it's the simple things that get over looked. Good luck!
Old 08-31-2007, 09:05 PM
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These guys are on to something, pull a rocker bolt, make sure it has thread sealer, if it does or does not, use the flash light and see where it goes, I worked on an engine and had the same situation, cept this was a head swap on a older engine, turns out it had twice as money bolt holes than needed and the dumbass taht put it together didnt realize it.
Old 09-01-2007, 08:43 AM
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White clouds are not good.. Good chance it's coolant. If the heads were done recently, it's possible the head gaskets are not having a good seal. Check the oil and see if it smells sweet, or it's milky in color. GL
Old 09-01-2007, 11:44 AM
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Get is diagnosed and fixed quickly... Trust me, next thing your car will be running HOT and you will warp the Heads.. Now you are talking some $$$$..

Good luck




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