leaking coolant - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-29-2006, 08:36 AM   #11
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Quote:
Originally Posted by BillBoost37
While you are there..it would be an injustice if we didn't beat you into doing the lower intake gaskets as well. Just for peace of mind.
Joking right Bill , I hope
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Old 04-29-2006, 12:23 PM   #12
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Looks like the lower manifold gaskets are done... Time for a replacement

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Old 04-29-2006, 04:12 PM   #13
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should I use sealant with felpro, can IM surface be cleaned without wire bristle drill or rotary tool?Best way to soak injectors?Are there any o rings with gasket?Thats all I can think of Im on 12 hr nights all weekend may stat taking apartr tommorrow.thanks
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Old 04-29-2006, 09:11 PM   #14
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Default gaskets

Tips
When I did the 96 it was extremely important when you remove the intake that no debris gets into the lifter valley. Make sure you cover it good while cleaning the surfaces.
You also must do an oil change before you are done.
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Old 04-29-2006, 11:14 PM   #15
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I had that done last year John!
I was able to assist, and just like Bill had said, might as well do the lower gasket as well. You will already have alll the parts off, this would be the best time to do it, and if the upper is going, the lower will be on its way. It took us about 4 hours (not in any rush) and there was only one snag- the coolant guage sensor had to be snipped, as we somehow managed damage it. The temp just kept on rising just after we started it up. But I replaced that a week later, and no problems since.
Do an oil change indeed, and a coolant flush wouldn't hurt either.
nice pics by the way!
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Old 04-30-2006, 07:30 AM   #16
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Okay thanks guys,I may be going mental but I dont have a lower intake on my 90 or I should say it is only a onetake 91 and up must of had 2 pc intake Oil change for sure, and coolant change.
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Old 04-30-2006, 05:16 PM   #17
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I am in the I need HELP stage ,need to know how to disconnect little coolant hose attached to TB underneath(I am assuming it is coolant) sounds like the one Mike broke.Everything is off pretty well .Just need TB off couple small things like alt and stove pipe and I can start on manifold bolts.Off to work now , finish disassembly tomorrow.thanks
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Old 05-03-2006, 09:52 PM   #18
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Well since I am back on BC I will update. Intake , Tb , and botth valve covers are on just have to hook everything else up .kinda nervous about all this working out without leaks being first time and all but friday I should be able to get er going as im in work for a couple days.
If I am correct after install is done I change oil then run car for how long and change oil and filter?Also do I do anything with coolant, just fill it and go.
Anyways thanks for all the help guys appreciate it. John
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Old 05-04-2006, 10:39 AM   #19
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Quote:
Originally Posted by jdq
If I am correct after install is done I change oil then run car for how long and change oil and filter?Also do I do anything with coolant, just fill it and go.
Anyways thanks for all the help guys appreciate it. John
I don't exactly know how long is being recommended, but I would want to change after a week or so, certainly no more than 500 miles, IMO.
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Old 05-04-2006, 12:15 PM   #20
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Quote:
Originally Posted by lash
Quote:
Originally Posted by jdq
If I am correct after install is done I change oil then run car for how long and change oil and filter?Also do I do anything with coolant, just fill it and go.
Anyways thanks for all the help guys appreciate it. John
I don't exactly know how long is being recommended, but I would want to change after a week or so, certainly no more than 500 miles, IMO.
Agreed... I would do the same

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