motor bogging

[keepitgreen05]

i took out the v20 i have just bought. the motor ran fine at home with the muffs on once i put it in the water if bogged out and once i put it in gear it bogged out please any help and i put 25 fresh gallons of gas in today also

[spareparts]

what kind of motor are we talking about?

[keepitgreen05]

its a 1987 140hp johnson outboard

[tsubaki]

First two indications I pick on when this happens is contaminated fuel or restricted/clogged jets in the carb bowl.
It don't matter either way, I'll usually pull the bowls and clean the carbs. Normally fixes the problem. If not then at least this part is off my mind.

[keepitgreen05]

ok i will try to clean the carb thanks

[tsubaki]

There is a process possible that may not completely fix the problem that most people frown upon but may give a good indication if the bowl and jets needs cleaning.
Unscrew the drain plugs in the bowls, prime the bubble till a good flow of gas comes out, remember the flow, spray carburetor cleaner into the drain but contacting the orifice toward the jet, continue spraying till it sprays unobstructed, immediately prime the bubble to flush the cleaner out, see if the flow improves.
It may take several tries, it may damage the needle seats and/or float, causing you to have to get a rebuilt kit.
Safest, no cost way is to remove the bowls and go from there. Cleaning stubborn jets can be done with a pick method, copper wire is preferred.

[CharlestonSC]

my 89 the fule hose to the tank was bad ethanol gas eats them apart.

[keepitgreen05]

did you have the same problem it would run fine at home with the muffs hooked up but once in the water it was a total different story.......if i run it for 10min do you think it will burn it out

[Destroyer]

Originally Posted by keepitgreen05

did you have the same problem it would run fine at home with the muffs hooked up but once in the water it was a total different story.......if i run it for 10min do you think it will burn it out

Not sure what you mean. As long as an engine has cooling you can run it as much as you want, but if you're running it with muffs in the driveway DO NOT take the RPM's over 1500. Letting it sit and idle is fine. Have you tried using SeaFoam in your gas?

[spareparts]

have aome one o thur your carbs and set them up roght. A carb job on an outboard needs to be done every four to five years. I've got 18 carbs sitting on my bench right now waiting for me to rebuild(BTW, every one of them is a Yamaha)