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Old 10-30-2020, 10:29 PM   #1
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Default Roadtrek Generator Fuel Line Replacement

2004 Chevrolet 170P needs a new fuel line to the generator. How much of a pain is it to replace this?
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Old 10-31-2020, 12:23 AM   #2
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If it is like my 2005 RT 210, unless someone replaced the fuel pump to an external location, you will have to access the pump inside the generator. I dropped the genny low enough to access the pump, removed it and relocated it outside of the genny. Then replaced the hose from the tank to the pump and from the pump to the carb. I also added an inline fuel filter outside of the genny.
I have a lift so it was not that hard to do. I would not want to do it on my back.
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Old 10-31-2020, 02:58 PM   #3
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If it is like my 2005 RT 210, unless someone replaced the fuel pump to an external location, you will have to access the pump inside the generator. I dropped the genny low enough to access the pump, removed it and relocated it outside of the genny. Then replaced the hose from the tank to the pump and from the pump to the carb. I also added an inline fuel filter outside of the genny.
I have a lift so it was not that hard to do. I would not want to do it on my back.
Especially after having part of my hip recently removed!

Thanks for clearing this up. How difficult is it to access the top of the vehicle fuel tank to disconnect the fuel line?
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Old 10-31-2020, 03:09 PM   #4
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I seem to remember a poster quite a while ago the had a Chevy 170 that had the the generator line attached to a fitting in the side of the tank, and it was leaking. I don't recall what year it was though, but it was nearly impossible to get to seal for him. I don't know if this was common or not, as they usually do go in through the fuel pump and that requires dropping the tank to change.
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Old 10-31-2020, 03:16 PM   #5
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Originally Posted by booster View Post
I seem to remember a poster quite a while ago the had a Chevy 170 that had the the generator line attached to a fitting in the side of the tank, and it was leaking. I don't recall what year it was though, but it was nearly impossible to get to seal for him. I don't know if this was common or not, as they usually do go in through the fuel pump and that requires dropping the tank to change.
Possibly the fitting is on the side of the vehicle fuel tank up a bit from the bottom to prevent draining the tank fully and being stranded.
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Old 11-01-2020, 07:41 AM   #6
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Default fuel line& ext pump

won't help with the tank side of things but there is a thread for going with an external pump and filter at: https://www.classbforum.com/forums/f...ump-10648.html

I partially lowered the Onan, wiggled the cover up enuff to get to the DC line to the OEM fuel pump, then bypassed the weakass pump with an external.
I think I would just cut an access port thru the fiberglass cover to get the DC line next time and not F with trying to raise the cover, then get it back in place.

Your Fuel Pump Frustration May Vary; mine was pretty high ;- )
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Old 11-01-2020, 01:03 PM   #7
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I found a couple of old posts in the Yahoo Roadtrek forum archives that were a bit confusing but seemed to indicate on the 170 I mentioned earlier the poster had continuing dying and surging issues and that it tracked down to a cracked tube going into the tank.


But he said that it did not go in through fuel pump mounting even though it was on the the top of the tank. He stated there was an about 5" diameter welded on disc on the top of the tank near the rear of the top with a top going through it and that is where the hose connected. Roadtrek told him that was from the factory that way.


I have no confirmation of how accurate or not the information is.
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Old 11-05-2020, 05:20 PM   #8
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Not sure about 2004, but my 1999 dodge I had to drop the fuel tank to access the fitting on the top of the tank. It was a lot of work, but not to hard. used a motorcycle jack to lower the tank after emptying it as much as I could. I had previously installed a clear filter just outside the generator housing and saw air bubbles from the leaking fuel line. Be sure and use ethanol compatible line when replacing. The hardest part for me was disconnecting the filler and vent hose connections because they are in a tight spot to get at.
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