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Old 16 February 2006, 15:46   #1
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what do u think

i have an engine just having it servised and been told compression down on 1 piston 115,115,115,75 i was told when i obtained engine that it was working and in fab condition when last used,the engine has been stood for 5 years not been started nothing when i got it home i put a battery on and got it started 1st time i was talking to a macanic explained what the problem was what he said every engine is basicly the same what i would do is take it out on a lake and give it a dam good blasting at lest a tank full of petrol and check it after what do u think?
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Old 16 February 2006, 15:48   #2
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seems good advice even if the engine is shagged then at least you'll have some fun finding out!
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Old 16 February 2006, 16:08   #3
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rings ?

After five years in a shack, you may have one of the set of piston rings stuck, a good blast may help
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Old 16 February 2006, 16:11   #4
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Sounds like good advice from Rogue.

Try to go out with another boat, just in case or an Aux. outboard.
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Old 16 February 2006, 16:45   #5
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the only problem is that if it has been stuckaround for 5 years you might have some corrosion on a shell or bearing that would only show itself after a matter of time, i would go out and have a lot of fun but make sure you are close to safety or not in jeopardy if the engine failed, perhaps and aux with you or another boat, if after a tank of fuel and a good few hours of use it is fine and no knocking or ratling then you may well be fine!

speaking from experience here!! one of my engines blew!
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Old 16 February 2006, 17:26   #6
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How about a decarboning? Some solvents you put in the fuel tank and idle through the motor. Supposed to remove carbon deposits on the rings and piston crowns etc.
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Old 16 February 2006, 17:45   #7
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Quote:
Originally Posted by bigmike35
...take it out on a lake and give it a dam good blasting at lest a tank full of petrol and check it after what do u think?
I wouldn't do that. Just use it normally for a while and give it time to settle. Recheck the compression after an hour or so running. It sounds as though you may have a fairly good motor and it would be a shame to ruin it for the cost of a ring set and head gasket.
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Old 16 February 2006, 23:50   #8
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unfortunately those engines don't have head gaskets-they have blind bores so it's a long job to change the rings. If you're going to try and free the rings by running it Mike put a full can of Redex in the fuel tank and then take it out for the day but not at FULL throttle. Redex clears out crap that sticks to rings rather well.
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Old 17 February 2006, 07:07   #9
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unfortunately those engines don't have head gaskets-they have blind bores so it's a long job to change the rings.
OK but no difference realy cos you have to undo the bigends anyway. However, my point was not to be wreckless and cause unnecessary damage.
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Old 17 February 2006, 07:24   #10
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OK but no difference realy cos you have to undo the bigends anyway. However, my point was not to be wreckless and cause unnecessary damage.
yes I agree I could have been a bit more cautious in my post. After all us Welsh have got to stick together
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