1996 Oldsmobile 88 water in clylinders

Tiny
HARLEYSOFTAIL98
  • MEMBER
  • 1996 OLDSMOBILE 88
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 102,648 MILES
My son has a 96 old 88.V6.3.8. It locked up on him. Thought mabey the timing chain, but when I put num.1 plug had water in it. Then thought head gasket. Than I pulled all the plugs and theres water in all the clylinders. What do you guys think?Thanks for your help
Wednesday, October 15th, 2008 AT 7:22 PM

5 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
V6. Hmm if theres water in all cylindres I might be thinking the engien is hydrolocked from leaky intake manifold gasket.

Is it water or antifreeze?
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Wednesday, October 15th, 2008 AT 9:48 PM
Tiny
HARLEYSOFTAIL98
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Thanks for your answer. Its antifreeze. Answer to your? I was afraid might be cracked block.I started pulling the intake off. Thanks for your answer
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Thursday, October 16th, 2008 AT 3:37 AM
Tiny
BLACKOP555
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But since all cylinders are fulled I kinda rule out a cracked block since you say its a v6 not a straight/inline 6.

Get a compression test going and see.
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Friday, October 17th, 2008 AT 3:51 PM
Tiny
OUFAN59
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Had to replace the upper intake manifold (plenum) & gasket. Odd design has water going up into the intake end of the plenum. If slightly overheated or run low on coolant the joint looses it's seal & you guessed it, pours water into the intake.
I used a shop vac & small Dia. Hose to clear the cylinders through the spark plug holes & top of the intake manifold (lower) & changed the oil. Replaced the plenum & gasket, ($120@ parts store) started right up & runs great.
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Friday, November 21st, 2008 AT 11:51 AM
Tiny
BLACKOP555
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Thats really thought out, good job.

Hope it helps him with his problem.
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Saturday, November 22nd, 2008 AT 7:53 AM

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