Green liquid in throttle body - 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 02-16-2004, 11:47 PM   #11
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Quote:
Originally Posted by Foghorn
It likely hasn't caused any major damage, but fix the gasket immediately. Once all done you might want to do a top engine clean using GM Cleens or similar pruduct, be sure to do this in a somwhat remote location because it puts out a lot of smoke. You might also want to do an oil change.

Good luck!

Cheers,
Sound advise for sure, you may want to change the spark plugs too if its been happening for a while.
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Old 02-17-2004, 01:20 AM   #12
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I'll bet it'* leaking out of the same gasket that I recently replaced. The little rectangular intake manifold water jacket cross-over cover plate. You would be wise to change out your throttle body gasket at the same time. It'* an easy job but takes time because you will also have to remove the exhaust cross-over pipe to get at the bolts. But this can be a blessing in disguise if you want to install a new set of headers at the same time.
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Old 02-17-2004, 02:42 PM   #13
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Quote:
Originally Posted by 2000SilverBullet
The little rectangular intake manifold water jacket cross-over cover plate.
Is that the technical term?!!?



I doubt anything'* cracked. Just replace the gasket and you'll be golden...
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Old 02-17-2004, 03:25 PM   #14
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yea I had found some coolent in the TB when I replaced my TB gasket. I had the car apart for a few days and thought OH **it there is coolent in the engine!! Turnes out everything is fine. Change that TB gasket and check the oil. THe TB gasket is like $11 and some odd change from GM. It is a GM only part I have the part number but that is for a N/A Series I
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Old 02-17-2004, 03:41 PM   #15
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In case some miss the point here, coolant is supposed to travel from the lower intake, up through the upper intake or supercharger, through the TB, and back down. It'* normal to see coolant when pulling the TB, and I'd freak if I didn't see it.
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Old 02-17-2004, 10:29 PM   #16
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Quote:
2000SilverBullet wrote:
The little rectangular intake manifold water jacket cross-over cover plate.


Is that the technical term?!!?

Sounds good enough to be the technical term.

I know what you mean about seeing coolant stains inside the supercharger inlet when you remove the throttle body. Sure, the coolant naturally flows as Will has stated, but the gasket is a weak point and unless you coat both sides with silicone ( just a light smear) you stand a good risk of leakage that could eventually get bad enough to do serious damage. Thank good GM design for making it leak on both sides, so you get some advance visual warning.
My guess is that the supercharger vacuum at the entrance is very high and tends to draw pressurized coolant thru the unsealed gasket in very small amounts that only progress worse.
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Old 02-18-2004, 09:36 AM   #17
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that wasnt the only thing loose. the supercharger had a few loose bolts too and the gasket wasnt sealed down on it either
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Old 02-18-2004, 12:12 PM   #18
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Quote:
Originally Posted by 1993 SLE
yea I had found some coolent in the TB when I replaced my TB gasket. I had the car apart for a few days and thought OH **it there is coolent in the engine!! Turnes out everything is fine. Change that TB gasket and check the oil. THe TB gasket is like $11 and some odd change from GM. It is a GM only part I have the part number but that is for a N/A Series I
Could you post or PM me that P/N?
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Old 02-18-2004, 12:25 PM   #19
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yea Let me find it. The old gasket is in the car along with the packaging
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Old 02-18-2004, 12:37 PM   #20
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GM P/N 17113264

You get the revised gasket (its thicker than the old one) and the studs that hold the TB on to the intake and directions
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