Another reason for the faithful, continued use of Marvel Mystery Oil.
Hung valves, frozen rings? These are what it was created for. It saved me more than once.
Good luck,
O J
1GM woes. Why oh why?
Moderator: Jim Walsh
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Oswego John
- Posts: 3535
- Joined: Feb 5th, '05, 20:42
- Location: '66 Typhoon "Grace", Hull # 42, Schooner "Ontario", CD 85D Hull #1
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Wayne Grenier
- Posts: 147
- Joined: Mar 7th, '06, 18:30
- Location: 1974 CD 28 Meantime
Brenno-something here doesn't make sense-valves and rings don't fail while the boat is sitting still-if it ran fine when you shut it off-it should start again-
You say it turns over-so its not "frozen"-but the mechanics are telling you it has no compression and won't sart-one possibility is you one exhaust valve is frozen-can you take the valve cover off and turn the motor over by hand and see if the push rods and rockers work? if its frozen a little wd-40-a hammer tap etc-might help but I don't think that's your problem-
you should confirm you are getting fuel to your injector-you can loosen the fuel line at the injector and turn the motor over and see if anything squitrs out (were safety glassed-its 120 psi)-no fuel? check the fuel shut off switch-the filters-pums etc.-if you have fuel and can get the motor to turn over fast enough it should start-
You can try squirting a small amount of engine oil into the cylnder to lubricate the rings-you can squirt a very small amount of ether on a rag and hold it near the air intake while you turn the motor and see if it starts-do not ever squirt starting fluid directly into a diesel-or you will need a new motor-
how many hours on this motor? I don't see how it could be a catastrophic engine failure-tha't usualy from lack of oil or running without water-anyway let us know and don't assume you need a new motor-if you do-one idea is to do a web search for engine rebuilding services-many times they will swap you for yours for a rebuilt one right off the shelf-
since its a one cylnder, yu only have 1 piston-2 valves and I think 3 rings-it can't be a big job to take the head off and replace the rings and grind the valves-
You say it turns over-so its not "frozen"-but the mechanics are telling you it has no compression and won't sart-one possibility is you one exhaust valve is frozen-can you take the valve cover off and turn the motor over by hand and see if the push rods and rockers work? if its frozen a little wd-40-a hammer tap etc-might help but I don't think that's your problem-
you should confirm you are getting fuel to your injector-you can loosen the fuel line at the injector and turn the motor over and see if anything squitrs out (were safety glassed-its 120 psi)-no fuel? check the fuel shut off switch-the filters-pums etc.-if you have fuel and can get the motor to turn over fast enough it should start-
You can try squirting a small amount of engine oil into the cylnder to lubricate the rings-you can squirt a very small amount of ether on a rag and hold it near the air intake while you turn the motor and see if it starts-do not ever squirt starting fluid directly into a diesel-or you will need a new motor-
how many hours on this motor? I don't see how it could be a catastrophic engine failure-tha't usualy from lack of oil or running without water-anyway let us know and don't assume you need a new motor-if you do-one idea is to do a web search for engine rebuilding services-many times they will swap you for yours for a rebuilt one right off the shelf-
since its a one cylnder, yu only have 1 piston-2 valves and I think 3 rings-it can't be a big job to take the head off and replace the rings and grind the valves-