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Oldsmobile Forum: 96 3100 oil leak
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Old June 20th, 2011
DC67 DC67 is offline
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Question 96 3100 oil leak

I have a 96 olds supreme with a 3100 v6 engine. It has an oil leak around the distributor plug on top. Does anyone know if the intakes need to be removed to fix this o-ring?
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Old June 29th, 2011
revon revon is offline
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Nope, pull the bolt and clamp, use vise grips and twist it back and forth while pulling upward. Some use a round "O" ring, some just use a gasket. You probably need the O ring. Use sealer too, but clean all the mating surfaces with carb spray cleaner to get the oil off. (the block too)
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Old December 9th, 2018
woodyBR549 woodyBR549 is offline
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Mr. REVON in the above post is dead wrong. Just sayin'. And its an involved process.
Yes you will have to remove the upper intake and throttle body assy. You can leave the TB on the intake or take it off first. Up to you. Then move or remove the fuel lines out of the way. You still have the heater return tube in close proximity but you should be able to work around it. The distributor plug(Engine Oil Pump Drive) PN 1104072 or 1103996 is about 5 1/2 inches long (see photo) and once you pop it loose the hex drive shaft may come out with it, which is ok. Just wipe the shaft clean and using needle nose pliers and place it back in the engine. Turn it back and forth until it drops into the oil pump. Now you have the drive assembly in your hand, do you think it can be removed with out taking the intake off?? Remove the old "O" ring, clean the groove and install a new "O" ring. Clean the flange where it seats on the block and clean the block face as well, both oil free. Put a 1/8 inch bead of "Ultra Black RTV/Silicone" on the block face. To install the distributor plug back in the block is a little tricky. It has to engage the hex shaft and the cam gear. Insert the plug without touching the RTV, rotate it back and forth as you go. Once it is in as far as it will go with moderate hand pressure, turn the crankshaft slightly clockwise until the plug seats against the block with moderate hand pressure and you see the RTV squeezing out all the way around. DO NOT beat the plug back into the block. Install the clamp and bolt. torque the bolt to 275 to 300 inlbs(23 to 25ftlbs). Install everything you removed to get to the plug. Allow 2 - 3 hours for the RTV to soft set and start the engine. Heat will rapid cure the RTV, and don't drive the car hard until the RTV is completely cured. So, pat yourself on the back! you're done. It will never leak again.
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Old December 9th, 2018
woodyBR549 woodyBR549 is offline
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Duplicate, sorry.

Last edited by woodyBR549; December 9th, 2018 at 05:05 PM. Reason: duplicate
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