2021 Carbon Fuel tank not venting.

[Jerster77]

I have a 2021 keystone carbon 36 that has onboard generator and fuel pump. When I run the generator the fuel tank pops loudly and does not vent properly. The vacuum created starves the generator and shuts it down. I cannot find any information on the tank or how it vents the warmer it is the worse it gets. Any advice would be greatly appreciated.

[skids]

The tiny valve at the middle of the fuel cap? That is how a lot of gasoline tanks are vented.

[snoxracer40w]

I have a venting problem with the roll-over vent on top of the tank. Anyone here have that? I'm having a tough time searching for a replacement vent. There are thousands of them out there. Anybody have a parts site that might help?

[jasin1]

Originally Posted by snoxracer40w

I have a venting problem with the roll-over vent on top of the tank. Anyone here have that? I'm having a tough time searching for a replacement vent. There are thousands of them out there. Anybody have a parts site that might help?

This is from several years ago https://www.keystoneforums.com/forum...ad.php?t=31293

[snoxracer40w]

I think my problem is the fuel vent at the top center of the tank. THere is a line that goes from there into the evap canister and that has a vacuum on it when I suck on it. I think it doesnt allow the gen fuel pump to suck fuel without a load. My fuel pump went out and the new one would heat up super hot. When I pulled that top vent/rollover valve it runs fine and the fuel pump does not get hot. Anyone have suggestions on how to get the part. I've spent hours on the google machine and other RV parts sites, no dice. There are 2 part #s on it, one is a 4-digit, the other is a 12 digit. When I put either in I get a fuel vent part but says its compatible with chevys....dodges from the90's. Mine is a 2009 raptor.

[chuckster57]

If the part you’re looking at looks like the failed one, I would buy it. There are times that the RV industry uses what ever they can get at the cheapest price. For example, the 2022 Tiffin Allegro RED uses the same taillights as my 2014 Kia soul.