2005 mustang GT *compression test results* ~give your thoughts~
12-13-2009, 05:31 AM
#14
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12-13-2009, 08:44 PM
#16
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when i first bought the car, and changed the oil about 1k after buying, i saw the oil was metallic swirlishness like when u build a new car and see the rings seating.....i ran castrol syntec for another 3k and saw less but still some....then i put royal purple in....
the compression results to me are great, but seems there may be a possibilty the engine was new or rebuilt....
the compression results to me are great, but seems there may be a possibilty the engine was new or rebuilt....
12-15-2009, 10:03 AM
#17
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when i first bought the car, and changed the oil about 1k after buying, i saw the oil was metallic swirlishness like when u build a new car and see the rings seating.....i ran castrol syntec for another 3k and saw less but still some....then i put royal purple in....
the compression results to me are great, but seems there may be a possibilty the engine was new or rebuilt....
the compression results to me are great, but seems there may be a possibilty the engine was new or rebuilt....
I highly doubt a dealership would sell you a car without telling you about and charging you for the newly built engine.
12-30-2009, 01:32 AM
#18
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but from ford they say that if the first "bump" is 75% of the fifth one compression is within spec
12-30-2009, 01:36 AM
#19
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which means i must add you have to know the compression reading from the first "bump" and fifth "bump" and then do the math to know if it is in spec and if you have more than one cylinder with lower than normal readings do a wet compression test
and after the wet test use this as a guide
If compression improves considerably, piston rings are faulty.
If compression does not improve, valves are sticking or seating incorrectly.
If two adjacent cylinders indicate low compression pressures and squirting oil on each piston does not increase compression, the head gasket may be leaking between
cylinders. Engine oil or coolant in cylinders could result from this condition.
ooh yeah and did you prop the throttle body open when you did the test?
and after the wet test use this as a guide
If compression improves considerably, piston rings are faulty.
If compression does not improve, valves are sticking or seating incorrectly.
If two adjacent cylinders indicate low compression pressures and squirting oil on each piston does not increase compression, the head gasket may be leaking between
cylinders. Engine oil or coolant in cylinders could result from this condition.
ooh yeah and did you prop the throttle body open when you did the test?
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