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Old 06-29-2011, 11:12 AM   #1
Elf
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Generator fuel leak?

For all of you RV experts...
I just topped off the gas tank. We just purchased this MH just before winter so have not had many top offs yet. As a matter of fact, this is the first time since the drive home that the tank is actually full.
Anyhow, I topped off the tank and then pulled into the Costco parking lot to wait with the dog while the DW went inside. I walked around the outside to check on the new TST TPMS and noticed that there was a wet spot on the pavement near the generator door with a gas odor. I opened the door and the line going to the generator was wet. There was no active leaking at the time and once I got home I saw no more leaking.
Does anyone know if this is an indication of an actual leak or is there some sort of overfill or pressure relief built into the line?

Thanks
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Old 06-29-2011, 01:09 PM   #2
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The generator has to pump fuel from the tank, so I doubt if the wet spot had anything to do with filling the tank. The generator would have to be running to pump fuel.

It seems more likely that the tank fill tube or the tank vent hose runs near there and one of them leaked some fuel. Sometimes fuel runs down the vent line from the filler opening.
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Old 06-30-2011, 12:47 AM   #3
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OK...got it figured out. I tried to start the generator and a leak started from a pinhole leak just prior to the clamp on the fuel line. I was hoping that once the pump quit running the leak would slow and stop. I was wrong. Apparently just hoping is not enough to get a leak to stop. I was able to contain the leak until I got the clamp off and raised the end of the hose above the level of the tank to get the flow to stop.

After a quick trip to NAPA I got the fuel line changed out and all is well. I feel very fortunate that the first time I noticed the wet spot it did not develop into a continuous leak on the spot. I don't know why it didn't. It's time to do a thorough check of all lines and hoses.
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Old 06-30-2011, 04:37 AM   #4
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Quote:
Originally Posted by Elf View Post
OK...got it figured out. I tried to start the generator and a leak started from a pinhole leak just prior to the clamp on the fuel line. I was hoping that once the pump quit running the leak would slow and stop. I was wrong. Apparently just hoping is not enough to get a leak to stop. I was able to contain the leak until I got the clamp off and raised the end of the hose above the level of the tank to get the flow to stop.

After a quick trip to NAPA I got the fuel line changed out and all is well. I feel very fortunate that the first time I noticed the wet spot it did not develop into a continuous leak on the spot. I don't know why it didn't. It's time to do a thorough check of all lines and hoses.
i had a similar leak, actually more of a seep. i could smell gas all the time. i replaced the fuel line and both upper and lower fuel filters, onan pn 48-2014.
the onan clamps were a pita to remove. i had to cut them off and used regular hose clamps on the new installation.
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