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Old 09-13-2010, 10:11 AM
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Join Date: Jul 2003
Location: BC, Canada
Posts: 109
C220 M111 Compression Test/Leak Test

On a 1996 C220 with M111 engine (4 cyl) what results should I expect for compression test and leakdown test? What results would give you caution and what would you walk away from? I realize that all cylinders should be reasonably uniform but what difference is OK?

The car has 170,000 km (105,000 miles +/-) and appears very well maintained so I have high expectations.

Other posts state that 11.5 bar (167 psi) is new spec for compression test but couldn't find anything on the leakdown test.

Thanks,
Paul
__________________
1989 300E
1999 C230 Kompressor
2005 Toyota Highlander AWD

Also owned:
1964 Chevrolet Impala (first car)
1972 Fiat 124 Sport Spider (first sports car)
1976 VW Scirocco (first new car)
1970 Pontiac Parisienne (epitome of bland)
1980 VW Scirocco (last new car)
1953 GMC 6x6 (amazingly well engineered)
1967 Austin Healey 3000
1987 F150 4x4
1978 F150
1987 VW Jetta
1992 Toyota Previa AWD
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1949 John Deere Model M
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