I have a 93 Winnebago Brave with an Onan 6.5 genset. Generator starts and purrs like a kitten about 75% of the time I start it. The other 25% of the time, it bucks and spits and sounds like it is going to shake out of the motorhome then it dies. Normally if I drive for 15 minutes and try it again, it fires right up. Any clues?
Generator gone mad
- Thread starter JimE
- Start date
Generator gone mad
When it starts right off means everything is okie dokey :laugh: . Ain't I a smarty pants.
The needle valve in the carb is not shutting off all the way so whne you shut down it leaks a little fuel by and sett up a very rich mixture that won't burn :dead: . After you let it set for a while the excess fuel evaporates the needle valve reseats and she kicks off
.
Float set too high will cause the problem ususally. It you don;t have a fuel filter get one :approve: .
When it starts right off means everything is okie dokey :laugh: . Ain't I a smarty pants.
The needle valve in the carb is not shutting off all the way so whne you shut down it leaks a little fuel by and sett up a very rich mixture that won't burn :dead: . After you let it set for a while the excess fuel evaporates the needle valve reseats and she kicks off
.Float set too high will cause the problem ususally. It you don;t have a fuel filter get one :approve: .
janicenlarry
New Member
Generator gone mad
low hours is not a good sign of proper maintenance. You need to run these gennys 1/2-1 hr per month under full load. Failure to do this is one of the biggest problems with generators
low hours is not a good sign of proper maintenance. You need to run these gennys 1/2-1 hr per month under full load. Failure to do this is one of the biggest problems with generators
Kirk
Senior Member
Generator gone mad
quote: only 5 hours on it since the rebuild.
That is exactly the reason that your float is probably sticking. What happens if the gen sits unused too much is that the fule evaporates from the carb and leaves behind a sticky film. Each time you start it you fill the bowl again and then another layer forms. For that reason, Onan suggest operating the genset for a minimum of 1 hour per month with 1/2 hour to be loaded to at least 1/2 power. The second thing that does is to warm the generator as well to drive out any moisture that has condensed in the windings. It takes about six weeks for the carb to evaporate dry.
quote: only 5 hours on it since the rebuild.
That is exactly the reason that your float is probably sticking. What happens if the gen sits unused too much is that the fule evaporates from the carb and leaves behind a sticky film. Each time you start it you fill the bowl again and then another layer forms. For that reason, Onan suggest operating the genset for a minimum of 1 hour per month with 1/2 hour to be loaded to at least 1/2 power. The second thing that does is to warm the generator as well to drive out any moisture that has condensed in the windings. It takes about six weeks for the carb to evaporate dry.