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Old 11-02-2006, 09:56 PM
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Engr693 Engr693 is offline
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Quote:
Originally Posted by Dan Rotigel View Post
Compression test: # 1-210 #2-95 #3-170 #4-225
Leakdown Test: #2-90% Leak-intake valve
Notice the difference between the 4 cylinders. That 95 reading is out of spec. all four cylinder pressure readings should be close to each other in value. Not exact but close. Say within 15% or so (don't know the exact % that is correct)

Did they do the compressions test again after squirting oil into the cylinders? If not, by doing so it could bring the 95 reading up. If it does, I would suspect you may have compression ring problems on the piston in that #2 cylinder. Number 3 is a little off too, but I would be more worried about #2.
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1973 450SL
1999 Silverado 4X4 Ext Cab
1999 Mercury Sable
1972 450SL Parts car

Previously owned keepers:
1967 MGCGT - 3L-6
1972 Mustang Fastback - 351C

Current Cylinder Index: 37
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