Replacing some gaskets - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-02-2009, 10:57 PM   #11
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Old 07-02-2009, 11:36 PM   #12
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I'm in Portland, Oregon.

One more question. The shop said they were going to have to replace the "intake manifold gasket." Does this mean they are going to replace the upper only, or both the upper (UIM) and lower (LIM). Because if they replace only the upper and it still leaks coolant from the lower I'm gonna be pissed. I'm going to call them tomorrow morning to see if they still have the SC off and if they're replacing the LIM too (they should for $650, the bastards).
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Old 07-03-2009, 06:05 AM   #13
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I would call and ask them if the are going to do the LIM gasket? Lower Intake Manifold gasket I would hope so. I am not sure what your shop is doing but call and ask to be safe good luck and let us know. I hope you have good news from your shop with your Bonnie.
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Old 07-03-2009, 11:23 PM   #14
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Yes they are doing the LIM, but not the UIM because apparently that one is in good shape. When I got there they already had the supercharger back on so, oh well on the easy coupler swap thing. The mechanic said he went through the whole cooling system and now with a new water pump and a few new hoses the engine totally solid. I'll I got now is the coupler and the valve cover gaskets and she'll be brand new.
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Old 07-04-2009, 05:08 AM   #15
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That is some real good news best of luck to you and Bonnie. Keep us posted, I hope that it is such a happy ending here for you and your ride.
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Old 07-09-2009, 09:35 PM   #16
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Back from shop with a bunch of stuff done: LIM replaced, coolant flush (someone mixed Dexcool and green), 2 belts, a few hoses, water pump, driver idler pully (something like that), and a few other small things. Still need to do */C coupler and valve cover gaskets.

How hard was it to take off all the stuff that'* on top of the supercharger, like the fuel injection system? And how do I stop the gas flow so I can take if off in the first place. Also is this the right */C gasket....

INTENSE-Racing.com: Supercharger Gasket (L67)
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Old 07-09-2009, 11:34 PM   #17
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Old 07-09-2009, 11:44 PM   #18
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I've been there. It doesn't say how to stop the fuel, it just states "bleed off fuel pressure," I want to know how.
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Old 07-09-2009, 11:55 PM   #19
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there are 2 ways first unplug fuel pump fuse from pass side fuse panel behind kick plate open fuel cap to let out pressure start car car will not run then wrap towels around schrader valve and press in valve with a wooden chopstick to let out gas onto towel, then press in fuel line snaps on fuel rail so when you pull them off have a towel here as well to get extra fuel some will come out from all three places that'* what the towel is for. Second go buy a fuel pressure relief kit to attach to the schrader valve and drain fuel into approved container. Buy FSM manual off of ebay to help with your car and look up all information about removing SC from this site do your homework and it will be much smoother. To help look up all of my post questions that is where I had problems and this will help. I think that is the wrong SC gasket as well. Do you have Oreileys auto parts? That is where I ordered my gasket from. Good luck and let us know.
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Old 07-09-2009, 11:59 PM   #20
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Also remove negative ground cable after starting car before draining all fuel lines so you have no fires it wouldn't be good to have free gas all over everything while power is hooked up.
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