LIM gaskets - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-18-2006, 12:18 AM   #1
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Default LIM gaskets

I would like to know what degree of difficulty it is to do the LIM gaskets. Probably on a scale of 1-10. i would like to know because i would like to do it as a preventitive measure as ive read they do go bad quite often. im pretty handy when it comes to cars but i havent done anything this extensive before, is most of it just bolt off and then back on? or whats the deal. i have already done the plenum and the plenum gasket because the egr port broke on the last one..... i know i know should of done the LIM at the same time but that was before i found here and knew they went bad. oh and also i didnt do the plenum... i had a mechanic do it, it looked fairly simple but didnt want to screw it up.

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Old 09-18-2006, 12:36 AM   #2
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Very High End Torque Wrench

A factory service manual


Anything is possible.
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Old 09-18-2006, 12:48 AM   #3
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thanks, sorry to say though i just went to check and on the passenger side between the front valve cover and the plenum next to where the pcv valve there is a little puddle there that keeps coming back, i have yet to find out if its oil or coolant, hopefully oil so i doesnt have to be such a big deal but with my luck im saddened to think its most likely coolant
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Old 09-18-2006, 01:16 AM   #4
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That'* a pretty tough call, as one persons 8 will be another'* 4. If you are good with cars, following instructions (don't do it without them) and have the proper tools, you should be able to do it without any problems.
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Old 09-18-2006, 01:49 AM   #5
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You should be primarily worried about the UPPER intake manifold on that car, and do the lower gaskets at the same time.

Being in MN is a big advantage. You have some skilled members in your area, and they get together quite often.
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Old 09-18-2006, 03:27 PM   #6
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the upper is already done, i did the upper before i knew the lowers went bad and before i knew about this site and now i would like to have the lower done as now i see there is either oil or coolant sitting between the valve cover and the plenum next to the pcv valve, hopefully its oil but i still have yet to check
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Old 09-18-2006, 04:02 PM   #7
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I use a 3/8" drive Craftsman beam-type torque wrench for the UIM LIM work. It is about $25. There are several well-documented threads on how to do this in the Techinfo article: http://www.bonnevilleclub.com/forum/...e=article&k=38. I would rate this work a difficulty of 5 on a 1-10 scale.
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