Coolant loss - test results - Saab 9000 Bulletin Board - Saabnet.com
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Coolant loss - test results
Posted by DanaH (more from DanaH) on Mon, 16 Mar 2015 13:20:37
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My 97CS 5 spd has been loosing coolant, approx half the overflow reservoir over 300-400 miles. Results of the compression and leak down tests were as follows.
Compression - all cylinders right about 175 psi
Leak Down Testing @ TDC - cylinders 1,2,4 held steady 100 psi, cyl 3 resulted in a clearly heard hissing from the oil fill with dipstick removed.
Balloon over coolant reserv showed no air movement both tests.
Plugs look good, no indic of collant on dipstick, no exhaust smoke.
Conclusion - head gasket at cyl 3 has slight break to oil gallery?
Comments anyone?
Thx,
DanaH
97 9000CS, 160k miles, one overheat 3 yrs ago
posted by 170.63.74...
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