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Engine Compression

COMPRESSION SPECIFICATIONS

Application (1) Specification
Compression Pressure
Gasoline Engine
Normal
2.3L Supercharged 109-153 psi (7.5-10.5 bar)
2.8L V6 174-203 psi (12-14 bar)
3.2L V6
CLK320 & E320 174-203 psi (12-14 bar)
ML320 145-174 psi (10-12 bar)
3.2L Inline 6-Cyl. 145-203 psi (10-14 bar)
4.2L V8 145-203 psi (10-14 bar)
4.3L V8
C43 & CLK430 160-189 psi (11-13 bar)
E430 174-203 psi (12-14 bar)
ML430 145-174 psi (10-12 bar)
5.0L V8
CL500 & S500 145-203 psi (10-14 bar)
SL500 174-203 psi (12-14 bar)
Minimum
2.8L & 5.0L (Eng. 113.961) 131 psi (9 bar)
3.2L (V6)
CLK320 & E320 131 psi (9 bar)
ML320 116 psi (8 bar)
3.2L (I6), 4.2L, 4.3L & 5.0L (Eng. 119.98) 145 psi (10 bar)
3.2L (I6), 4.2L, 4.3L & 5.0L (Eng. 119.98) 145 psi (10 bar)
Maximum Difference Between Cylinders
2.3L, 2.8L, 3.2L, 4.2L, 4.3L & 5.0L 22 psi (1.5 bar)
Diesel Engine (3.0L)
Normal 421-508 psi (29-35 bar)
Minimum 261 psi (18 bar)
Maximum Difference Between Cylinders 44 psi (3 bar)
(1) Information for 2000 CL500 and S500 is not available. Information for 5.5L engine is not available.