1991 Johnson 175

[fishboy7504]

Just wondering if I could get some thoughts or ideas. My outboard, a '91 Johnson 175, is quite tempermental on startup. This morning as chilly as it was, cranked right up. I idled 5 minutes or more before blastoff, ran 2 miles downriver, caught 2 keepers and was planning to leave for another area. When I went to start it, it immediately fired up at full throttle or dang near and I didn't have my foot on the throttle. I quickly shut it off, popped the hood and the carb linkage didn't appear to be sticking, it operated smooth and crisp, everything seemed kosher. At times it seems to run with a bit of a miss, but fine on top end, other times it won't even fire on startup, appears to be flooding. Go to fire it up again and it would run beautiful and idle perfect. I had a local marine shop put a new starter, bendix and solenoid on this spring and also adjusted the timing and of course it ran good for him. I confused and am sick of dumpin money in this dang thing. Does anyone have any ideas on what may be the problem, carb sychronization?, powerpack? electrical or mechanical? Thanks.

 

[tashasdaddy]

Re: 1991 Johnson 175

or could it be human error? http://forums.iboats.com/showthread.php?t=225510

 

[fishboy7504]

Re: 1991 Johnson 175

Thanks for the quick reply, but what would cause the WOT at startup, the carb linkage operates smooth and I don't even have my foot on the gas. It would start at WOT, I would quickly shut it off and try to restart and it would resume normal idle speed. Other than the linkage it's the only thing it can be right? Thanks again.

 

[tashasdaddy]

Re: 1991 Johnson 175

watch and make sure the timing plate is coming back to it's idle postion. it coulb be hanging up on something. spray some wd 40 under there.