502 with low compression
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502 with low compression
I am looking to buy a 27 fountain and just had a compression test done on it. It’s a 502 mag with 166hrs on it. All the cylinders were around 150 except #5. It was 110. Any ideas on what the cause could be and how much it would be to fix. I know its hard to tell without pulling the motor apart. I am trying to figure out how much to drop my offer that I made him. Should I bail out on the deal?
Thanks
Rob
Thanks
Rob
#4
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Get a leakdown test performed and it will tell you if it is valves or rings and then you can accurately make an offer based on that.
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low compression
my27fountain was the same way when i bought it.it is a 94 502 mpi,mag.it had 395hrs when i bought and 6 was week,[guy let the riser gasket leak].i used that as a barging tool also.knocked off 600 bucks.with few hours on your motor,i would not suppect that issue,but the can leak from the inside out.maybe it got a back wash and hurt a valve.hope this helps