โAug-15-2019 12:59 PM
โAug-18-2019 04:58 PM
185EZ wrote:
Is it still working?
Did you leave the arrestor plug out?
โAug-18-2019 04:09 PM
โAug-18-2019 07:38 AM
185EZ wrote:My toy hauler is 42'6". The generator tank is the rear tank right behind the tank for gassing the toys.
That sure seems like a lot.
I just measured mine. 13' from outlet on gas tank to inlet on gen on a 34' rv.
Maybe they put the tanks under the toy hauler garage to be used to fill up the toys too?
โAug-17-2019 10:16 AM
185EZ wrote:
That sure seems like a lot.
I just measured mine. 13' from outlet on gas tank to inlet on gen on a 34' rv.
Maybe they put the tanks under the toy hauler garage to be used to fill up the toys too?
โAug-17-2019 09:11 AM
โAug-17-2019 05:39 AM
185EZ wrote:The gas tank on my toyhauler is "only" 30 feet away from my generator.
I doubt they would put a gas tank 35' away
โAug-16-2019 06:40 PM
185EZ wrote:lakecityemt wrote:
Great thought, but instead of it pulling 35 feet from the tank its now pulling it less than 2 feet. Problem also happened with fresh gas from the tank.
No,
electric fuel pumps are placed inside tanks or below the tank especially in high performance applications
Your pump would do better being level pulling 35' than trying to pull 2' from below.
I doubt they would put a gas tank 35' away
Why are you using a separate tank?
โAug-16-2019 06:37 PM
lakecityemt wrote:
Great thought, but instead of it pulling 35 feet from the tank its now pulling it less than 2 feet. Problem also happened with fresh gas from the tank.
โAug-16-2019 06:23 PM
lakecityemt wrote:Backfire through the exhaust is often too rich. Backfire through the carb is too lean.
Good Morning.. Im hoping to find the Onan guru's that are here... For the past year I have been searching for answers and replacing parts with no improvement.
I have an Onan 5500 with less than 100 hours in my toyhauler. It began backfiring and then dying when a load was placed on it. I have so far replaced the carb, fuel pump and filter, fresh gas directly from beneath the gen. Once it starts backfiring, if the load is stopped, it continues to "put put backfire" until it dies then gives an overheated exhaust code (I assume from the backfiring?). Plugs were replaced, now currently testing to see if there is spark to both plugs. Please someone help me solve this issue!!! I'm in BFE Alaska in a perm set up, there's no ONAN tech here so I'm on my own... Thanks for ideas and suggestions!!
โAug-16-2019 06:01 PM
โAug-16-2019 05:59 PM
โAug-16-2019 05:45 PM
185EZ wrote:lakecityemt wrote:
For the past year I have been searching for answers and replacing parts with no improvement.
What year is this toyhauler?
Did it run right the previous year?
Have you checked that it has proper gas flow from the tank?
Have you tried loosening gas cap while running?
โAug-16-2019 05:42 PM
Chum lee wrote:lakecityemt wrote:Chum lee wrote:
"I assume from the backfiring?"
I can't see it or hear it run online. That said:
Backfiring implies that unburned mixture IN THE INTAKE tract is being ignited and burned. (not the exhaust) Can you confirm that? Backfiring is a classic condition of a lean mixture which would point to a vacuum leak somewhere in the intake. Are all the breather hoses connected properly? Is the (new) carburetor properly seated on the manifold with all the gaskets? When hot, a lean mixture can lead to pre-ignition/detonation which may sound like a backfire.
What happens if you manually force the choke on with the engine warmed up, loaded, and backfiring? (richen the mixture) Any improvement?
Do you have a compression tester? If so, does the engine meet the compression specs?
Chum lee
Chum you might be a bit over my head, LOL... I will ask him to try and manually adjust the choke when its backfiring. No compression tester.
OK let's try something simple. Your carburetor should have an altitude compensating adjustment screw. It has some control of your fuel mixture adjustment which should be set for your current altitude. It that set correctly? Having it set too high for your current altitude can create the symptoms you have. For example: If you are currently at 1500 feet altitude, adjust (turn) the screw so that the pointer is between 1,000 and 2,000 feet. Look at the screw adjustment on the carburetor, it will be obvious.
Chum lee
โAug-16-2019 03:45 PM
lakecityemt wrote:
For the past year I have been searching for answers and replacing parts with no improvement.