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Some Diag Work
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Posted by JustinHiFi [Email] (#829) [Profile/Gallery] (more from JustinHiFi) on Fri, 6 Mar 2009 17:58:25 Share Post by Email
In Reply to: CRAP! CRAP! CRAP! Headgasket CRAP!, Steinway, Fri, 6 Mar 2009 14:53:22
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First off, if your getting enough coolant though the exhaust, the engine should barely run. Here are some things to check to confirm HG.

-Are you losing coolant in the tank? Is it over pressurizing and overflowing? Open the tank (when cold) and smell the air in there, does it smell like burnt gas/oil or just coolant? Any oil in the coolant tank?

-Pull the plugs. If the HG is leaking in one cylinder, the plug will be really really clean when compared to other three. Its being steam cleaned in essence.

-If you have the original turbo setup on your 85, then it is only oil cooled/lubed without coolant so that eliminates that as a possible suspect. If you have the later style bolted on, perhaps you have a crack in the water jacket (I vote this if plugs are good and engine is running fine)

-Any coolant in the oil? Will look milky not amber or brown/black.

Yes, they do just "let go" at times, but usually give warning signs such as stuttering, signs on the plugs, using coolant etc.

JustinHiFi
Strictly Saab Inc.
Melbourne, FL

posted by 70.119.47... 
_______________________________________
JustinHiFi
Strictly Saab Inc.
Melbourne, FL

Current:
-1991 900 S-PG MT
-2001 9-5 Wagon AT
-2006 9-3 SS AT

Past:
-1964 96 2-Smoke MT
-1967 96 v4 MT
-1983 900 Turbo MT
-1985 900 SPG MT
-1988 9000 Turbo Black MT
-1988 9000 Turbo White AT
-1990 900 SPG Red MT
-1990 900 SPG Black MT 
-1991 9000 Turbo MT
-1991 900 SPG Red MT
-1992 9000 Griffin AT 
-2000 9-5 Aero Sedan MT
-2001 9-5 Aero Wagon MT
-2008 9-3 2.0T Sedan AT
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