outboard diagnosis,,

[bad habit]

hears the deal.my outboard is giving me heck.30% of the time my outboard works fine ,its the other 70% that boggles me.when i engage the throttle and start to speed up to about 15 to 20 mph it skows back down to 5mph.if i engage the throttle to full boar it still only gos 5mph.1 week later at a diff location it will work maybe that day but not the next.my outboard starts up right away,it sounds good,and minimal to no smoking,its fairly quiete,in fact id say it purrs?????????help?????????? :shrug:

[bad habit]

i fotgot some details;1996 johnson,2 cylander,50horse,prop

[ReelAttitude]

sounds like dirt particles in the carb,if you haven had a rebuild in a long time I would start there if there is a drain in the float bowl you can try that,

[bad habit]

whats frustrating is ive been given about 5 diff ideas,vacuumleak,fuel pump,dirty filter at gas tank,throttle cable?.....and you added one more to my list....does any body have,or have had this problem?thanx

[bigredapes]

2nd on the dirt in the carb, probably blocking the high speed jets. Had that same problem after rebuilding the carbs, and figured it couldn't be the carb -- I just cleaned and rebuilt it. I was inside out the whole thing twice. Turns out a piece of varnish from old gas got knocked loose during the rebuild and didn't get cleaned out.
Started and idled great. Gave it power and about halfway up it just bogged down and wouldn't go.

Another easy troubleshoot... just have an assistant pump the primer bulb while you're having problems. If that helps check for clogged fuel filter or bad fuel pump.

[bad habit]

another idea that was proposed to me;not enough oil mixing into the gas.theres a shutoff to protect your motor from complete self destruction.the shutoff prohibits you from accelerating more than 2000 rpm's. another great diagnosis.

[fishncliff]

I had the same problem with my 50hp Mariner.
Changed fuel hose and filter. haven't had a problem since.

[Lepper]

Filter hose's Carb, and make sure it isn't sucking any water up in that thing.. a little water can really mess up a carb.

dave

[bad habit]

we found a situation with the fuel filter,got a new one and have found another problem with a little gas leak,so im headin to the store to get a gasket..i think ill be good after that thanx for the help

[night stocker]

Sounded good to me Jason.I do good work for beer!I think.Get all those little issues dealt with and I think it will run fine.If not,I'll go into it a little deeper. Just keep me hydrated.Where is the little beer symbol,oh here it is :cheers: Randy

[bad habit]

well the saga continues,,we have recentley discovered a oil leak comin out of the prop..so i guess ive got to take care of that now,,