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    #2 and # 4 cylinders no compression

    2 stroke v4 engine. # 2 and # 4 cylinders have 0 compression. Pistons are good, rings are good, head gasket shows no signs of worn spots or leak. cylinders are in good shape. I'm lost and have no idea what could be the problem. oh the heads are good. any ideas i'm up for them at this...
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    reed valve

    my 87 115 hp yamaha shows i'm getting 0 compression on the number 2 and 4 cylinders. how ever when plugged it is harder to turn over than when not. meaning that compression is there. my question is could a bad reed valve be sending the pressure elsewhere in the crankcase giving me a false...
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    need help with ignition system PLEASE !

    I have a 1987 v4 115hp precesion blend that isn't getting spark to the #1 cylinder and very little to the # 3. # 1 coil is brand new. I have a little knowledge of how the system works but I would love to get some pointers of what could be causing this problem and how to test each component so...
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    87 yamaha 115 precision blend oil pressure sensor leaks

    need help! I have a 1987 yamaha precision blend v4 115 hp and the oil pressure sensor in the primary oil tank pops out and leaks oil. any ideas of what could be causing this? i thought maybe back pressure from faulty oil pump but really i'm unsure and would like to get some opinions or...
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    blowing oil sensor out of reservoir on engine

    i have an 87 yamaha 115 v4 precision blend that blows the sensor up out of the reservoir every time i run the engine. what could be causing this to happen. can i unplug this and simply add oil to my fuel in the fuel tank? I need to have this fixed by saturday so any help would be greatly...
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    no manufacture date

    how do i know what year my motor is? there is no stamp on the motor. it is a 115 hp v4 precision blend model # 11SETLH code 6E5 L serial # 361970 any help would be greatly appreciated.
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    how much pitch ?

    i've got an 89 skeeter bass boat 17'6" with a 115 yamaha v4 what would be the best propeller for this boat i want a good hole shot and the best top end i can get.
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    yamaha v4 precision blend 115

    i went to the lake yesterday and my motor would not crank i check it a little today it is not getting any fire. does this thing have a magneto or somethign to that affect.
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    towing with a 3.0 V6 Ford Ranger

    is anyone pulling a boat with a ranger. i have a 2001 with a 3.0. my boat and trailer weighs around 2000 lbs. maybe a little more. no brakes on trailer.
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    what could be wrong

    i have a 85 or 86 mercury 60hp outboard and i have to slam it into gear to get it to go. if i don't slam it into gear it dies. what could be the problem with this. i'd liek to ease into my start offs instead of full speed ahead. :'(
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