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1993 390 CPMY 7.4 Mercruiser Engine issue
- tkreager
- Scurvy Dog
- Posts: 1
- Joined: September 5th, 2018, 1:26 pm
- Vessel Info: 1993 Carver 390 CPMY
- Location: SF
1993 390 CPMY 7.4 Mercruiser Engine issue
Looks like my port engine is locked up tight, 550 hours, minimal use within past 5 years due to bad fuel related issues.
Any feedback is welcome.
Thanks
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- CYO Supporter
- Posts: 2290
- Joined: March 28th, 2016, 10:52 pm
- Vessel Info: 1998 Carver 355
Suspicious Fishes !
2022 Kawasaki 310X - Location: upper chesapeake bay
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Re: 1993 390 CPMY 7.4 Mercruiser Engine issue
Ran low or out of oil, oil not changed regularly and motor full of sludge, water in cylinders due to failed manifolds etc. Bad fuel will cause many issues but usually not a bottom end failure on a big block chevy. Do you know what caused it? Are you sure its locked up? (did you remove the plugs and try to turn it via wrench on the fly wheel)
- Midnightsun
- CYO Supporter
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- Joined: March 27th, 2016, 2:27 pm
- Vessel Info: The Midnight Sun
2007 41CMY
Volvo D6-370's - Location: Montreal, Canada
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Re: 1993 390 CPMY 7.4 Mercruiser Engine issue
- km1125
- Admiral
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Re: 1993 390 CPMY 7.4 Mercruiser Engine issue
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- CYO Supporter
- Posts: 5799
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
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Re: 1993 390 CPMY 7.4 Mercruiser Engine issue
I agree with the guys. Unless you've done some diagnosis, don't jump to conclusions. Could be anything from dead battery, starter, slave solenoid, to hydro lock or worse. What have you done to assess the issue?
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