Feared and dreaded Upper Intake - 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 11-28-2005, 09:23 AM   #11
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Thanks for all the tips, gang. Yes, there was indeed a leak as I drained ~6 quarts from the crankcase. It wasn't clear where the failure was and I didn't spend a whole lot of time looking for it. Put on the new plenum, lower gasket set and coolant elbows. Cleaned the throttle body well (very carboned up) and put it back together. Ran great but still had a small coolant leak from the front of the motor. Upon closer inspection, I noticed the water pump has two weep holes- one looking up at about a 45 degree angle and one down below, well hidden. The hidden one was leaking so off to Auto-Zone I go and after a few more bruised knuckles, she seems to hold her fluids now. All said, I got to learn a great deal about this car and spent some quality time in the garage (heated and well stocked beer fridge) between this and both daughters cars. What a way to spend a Thanksgiving- hope all you had a good holiday!
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Old 11-28-2005, 09:45 AM   #12

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Glad to hear you are all fixed up. It'* odd...nothing is "hard" on the cars. Merely time consuming.
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