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Boat Repair/mercury 50hp water in bottom 2 cyinders and low compression on 1 cylinder
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Question
hi ,i have just been told by the machanic that i have water entering the bottom 2 cylinders and the compressions 125, 125, 125, 75. the motor runs ok, it an mercury 500 50hp thunderbolt blue band 2 stoke, early 80's i think , a bit doughy and idles rough but havent had a problem. would the water and low compression be related to the same problem, eg, gasket or cracked head, would it be worth fixing and what are the reasons it could be leaking and how many gaskets are there that it could be leaking from. cheers, dave
Sounds like the exhaust plate is leaking ...a hole in the plate..it is on the port side of the motor....If you keep running it like it is..it will blow up...the water washes the piston off and causes it to scuff the cylinder....there is no head or head gasket....powerhead gasket and crankcase gasket.. thats it...
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| Rating(1-10) | Knowledgeability = 10 | Clarity of Response = 10 | Politeness = 10 |
| Comment | cheers, you were spot on mate, i took the cover off and both gaskets were rat sh#t. the machanic at the wreckers that had alook said it would be pointless trying to figure out whats wrong and fix it and to pretty much bin it.. considering it took me 20mins to write and ask you, get it off, find the prob and order the gaskets($45.00) i'd say he's full of it. i do have a follow up question about the compression thou. thanks heaps, dave | ||
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Everett Peacock
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Marine repair questions
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35 years experience boatmansbargains.com
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Taught Marine electronics at NOVA CC IN ALEXANDRIA VA
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