Coolant on Spark Plugs - Page 2 - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

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Coolant on Spark Plugs

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Old 07-17-2005, 11:55 AM
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upper or lower gaskets or intake itself could be at fault.
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Old 07-17-2005, 12:19 PM
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It'* supercharged, so my first guess would be LIM gaskets. Head gasket failures are EXTREMELY rare on these cars.
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Old 07-17-2005, 12:26 PM
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Originally Posted by willwren
It'* supercharged, so my first guess would be LIM gaskets. Head gasket failures are EXTREMELY rare on these cars.
thats true usually the LIM gaskts are leaking on the sides of the manifold though
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Old 07-17-2005, 01:16 PM
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Originally Posted by jr's3800
Were these cylinders right next to eachother? Or were they in another bank altogether?

If this happened in say cylinder 1&3 or 3&5 Than I'd say blown head gasket...

There is a possibility that you have had an intake gasket rupture, or possibly a head gasket failure...<--- This is incredibly rare on a 3800...

Don't junk it... Just hand it over I'll fix it and keep it

All I can say is that Cylinders 1/3/5 all have coolant on spark plugs.


When it was able to run it was blowing steam from below the exhaust manifold.
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Old 07-17-2005, 01:20 PM
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Which leads me to think a cracked block.


Hey uh Don, I already callewd first dibs on the car
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Old 07-17-2005, 10:28 PM
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I would lean toward intake gaskets. However you'd need to pull it down to find out for sure. MMMM compression test all three cylinders. This should help assess head gasket or just intake.
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Old 07-18-2005, 01:04 AM
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I'd be very surprised if 135 was caused by a cracked block (VERY surprised) or head gaskets. Sounds very much like LIM gaskets. A one-day 6 beer job.
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Old 07-18-2005, 01:08 AM
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Actually kinda realized I got a coolant consumption problem going now.....I maybe loosing my LIM gasket...but the oils fine so I dunno. I think it'* boiling off because it'* old or incorrect mixture.
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Old 07-18-2005, 01:18 AM
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Your LIM gaskets don't share fluids. If it'* just coolant, it'* very likely the LIM upper gaskets. If it'* a VERY slow non-pressure oil leak from under the LIM, it'* the lower seals.
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