Alert the Media ... 1988 Yamaha 50 Won't Run Right

capt Tony

Recruit
Joined
Dec 4, 2001
Messages
4
OK, I read thruogh some of the other questions and finally have enough humilty to post my first daunting engine problem.<br /><br />I have 1988 Yamaha 50. When I bought the boat a couple of years ago I switched the 20 gallon under seat fuel tank for two six gallon tanks as the fuel would be easier to keep the fuel fresh here in the desert southwest.<br /><br />Great plan but last spring I was using my wife's van (it's got the trailer hitch) and she had my car, she "removed my car from service" when she thought it was a four way stop sign and it was really a two. Well nobody was hurt, I got a newer used car and didn't use my boat for almost a year.<br /><br />So out at the lake last weekend the motor would start but not run. Got it to run at mid speeds only if I kept toggling the choke. It wouldn't idle at all.<br /><br />Drove home and drained all the fuel, including the three carb bowls, replaced the fuel filter and the spark plugs. The old spark plugs were oily and unburned oil run out of the cylinder about five threads.<br /><br />On the restart she fired right up but with the same symptons (needs choke, no idle). I even blew in some carb cleaning chem tool with no change.<br /><br />The mechanic at the local boat shop thinks it needs a carb rebuild. My wife (ironically we were married in 1988 - thirty five or so years ago) thinks I better start shopping for Christmas and forget about the boat.<br /><br />If it's a carb rebuild can I do it myself? If I wimp out what is a reasonblae for for this rebuild.<br /><br />Thanks in advance for any intelligent comment that can't really worsen an already dismal situation.
 

norman158

Petty Officer 1st Class
Joined
Jun 29, 2001
Messages
329
Re: Alert the Media ... 1988 Yamaha 50 Won't Run Right

get the manual for your motor and the carb kit follow the manual its not that hard just make sure all the jets are clean when you reinstall them
 

Fouled Plug

Ensign
Joined
Jun 29, 2001
Messages
935
Re: Alert the Media ... 1988 Yamaha 50 Won't Run Right

Not really hard at all. Drop the carbs, remove the carb bowls and use carb cleaner to de-gunk the needle/seat area and blow through all the jets and passages. It may even take a very fine wire to clean the jets. Just go slow and use common sense, and you should be up and running in no time. As for X-mas shopping? It can wait until the 23rd! :D Oh, and be sure to use fuel stabilizer in the future.
 
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