BF90 sputtering & stalling

keywest17

Recruit
Joined
Sep 28, 2007
Messages
5
Problem: My 1998 Honda BF90 is sputtering at idle, emitting strong gas scent with exhaust, and stalls when I try to accelerate.

Details: If I let it idle long enough (5 - 10 min) in the drive way or putter around near the dock it will eventually smooth out and and allow me to rev and accelerate. It only happened once about a year ago, but now has done it the last 3 times of use (approx 3-4 weeks apart).:mad:

This only occurs when 1st starting the motor, and once it goes away it runs fine the rest of the day. Also, when the problem goes away, so does the strong smell of gas in the exhaust.

Is this the choke or float sticking, or an air lock? Any ideas ?
 
Last edited:

Skinnywater

Commander
Joined
Mar 7, 2002
Messages
2,065
Re: BF90 sputtering & stalling

Check the choke linkage.
Do this by simply turning the key to the on position and activate the choke solenoid. Turn the key to the off position and the linkage should return to the open (choke off) position.
If it is sticking apply a little oil to the solenoid plunger piston.
 

keywest17

Recruit
Joined
Sep 28, 2007
Messages
5
Re: BF90 sputtering & stalling

Tried the choke actuator test and found it functioning ok with no sticking. The trouble with intermittent problems is that they never show up when you are troubleshooting.
I changed the crankcase oil and found it to smell like gas, the carbs may be tuned too rich also. It may be time for a tune up.
 
Top