Problem with 50 hp 2 stroke Merc.

I was out at sinclair today for the first time in several months. My boat cranked up fine, but when I went to accelerate I pushed the throttle down all the way and it ran for about 2 minutes then the motor shut off. After that I could not run the boat more than half throttle or the motor would shut off. After fishing for awhile, it took me an hour to get the motor cranked back up, and once it cranked I could only go barely above idle. I noticed alot of oil/gas coming from around the prop. What could be the problem and how much of a repair bill am I looking at? Thanks.

My 2 stroke E-TeK did about the same thing except for oil Gas from around the prop. My problem was an Injector but was covered by warrenty.

lightwirehooker

Before you have the engine worked on try runing it with Seafoam in the tank. It really does a good job cleaning the fuel system.

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you could have a fouled plug . run on muff and hold your finger on head around cylinders and feel if one is hotter than the other . the cold one would be the one not firing. or pull the plug wires off one at a time when you pull the good one the other will be the one not firing for some reason. run seafoam as directed put in new plugs . some motors has the serfase gap and they will foul easy .

My guess would be a fouled plug or a bad coil. The oil and gas you saw could be the result of one cylinder not firing and pumping the unburned gas and oil out the exhaust. Easiest way to check would be to put water muff on motor and with the motor running start pulling one plug wire at a time until you find the dead cylinder. If you don't find a dead cylinder then you may have other problems like timing or carburation.

Beat me to it didn't you Sage?

Had the same problem last year on my 50 hp merc. Was a fouled plug. I switched to surface gap plugs and have not had problem scince.

If you need some free help with it, send me a PM with your phone number. I live in Kathleen.

Sounds like you left gas in carbs this winter .Carbs gelled up no doubt about it. High speed jet stopped up and cant take the gas . Have carbs cleaned and you'll be fine.

Seafoam (double dose) and new plugs. If that dont work, then off to the doctor...:( Usually it's $65 for the diagnostic fee and if you let them do the repair, they may waive the fee...

Sounds like its time for some spring cleaning. could be running hot, fuel starvation, fouled plugs, old gas, gummed up carb or a combo of all of them... clean your carb Seafoam works if it is a small problem but yours sounds like I would go all the way through it. Change your water impeller, clean your plugs. and go fishing. If you dont know how, you will want to learn, after you pay the bill. I usualy save myself about $300 every time I open my tool box. the impeller is about $20, carb cleaner is about $6, seafoam is about $9 lots a luck ....PWW...

for some professional help go to The Marine Doctor - Index

or this site.
http://forums.iboats.com/

Gacowboy, this is an off topic subject, please post it next time on the off topic board. thank you! Jimmy S.:)

keep seafoam in your gas fellas

Clean your carbs.if it's starving for gas then it's surely starving for oil and that not good:(

except for the gas & oil.

Sounds like carb problems,I had the same problem on my merc, rebuilt carbs,put a fuel water seperater filter on and am running stabil marine formula in every tank of gas,no problems since thin

Try a can of Merc. Power Tune, sold at most outboard shops. Run motor at high idle, spray into all carb.til motor dies. Let sit over nite. Remove bowl drains to drain carbs.Clean spark plugs,put in new gas.Worked for me:D:D GOOD LUCK!

had similar problem tried all fixes and had my mechanic check the exhaust tube it was clogged with carbon if all else fails check it id never heard of this before but it solved the problem

I would try fresh gas and plugs at the house as mentioned above. If no go, you probably have a coil pack issue.

Not a fishing report...should be in off topic forum.

Some of you guys are serious bout this being off topic . All he done was ask a question bout his boat not the end of the world. If this is a problem then you guys need to adress it to the whole board.

you guys dont see what jim is getting to? theres nothing but bitching going on here at the ga board. we cant come to the board and chat or talk without being harassed. that is the main reason i have faded away from it. just lil ol me, but oh well, life goes on

this was started here and jimmy s said NEXT TIME use off topic .that is why off topic was put on here . there is a chat room here also. GA. forum is for fishing reports and how when and where the fish are biting what luer tyou used and such . lets let it go and let our moderators do as Ed has instructed them to do .