Rotorhead Posted January 28, 2022 Report Share Posted January 28, 2022 Hello, Quick question. After my last two fill ups I noticed that the right tank stayed full. I thought the tanks burn fuel evenly? When I filled yesterday I put 25 gallons in the left tank and zero in the right as it was full. I can't seem to find any information online about it. Some discussions but nothing clear. Have any of you experienced this before? I did just replace the vent tubing on both tanks since the old ones were dry rotted. They were clear inside. I forgot to look in the new tubing that has been on my garage shelf for quite a while. Thoughts? Quote Link to comment Share on other sites More sharing options...
rickeieio Posted January 28, 2022 Report Share Posted January 28, 2022 Kinked or pinched vent tube. Always look at the last thing you changed. Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio@yahoo.com Link to comment Share on other sites More sharing options...
Rotorhead Posted January 28, 2022 Author Report Share Posted January 28, 2022 7 minutes ago, rickeieio said: Kinked or pinched vent tube. Always look at the last thing you changed. great advice. I will. After this winter storm rolling through tonight. hahaha. Quote Link to comment Share on other sites More sharing options...
Darryl&Rita Posted January 28, 2022 Report Share Posted January 28, 2022 Second the vent tube suggestion, and the next thing would be the gaskets on the fuel caps. Bit more than one person. Quote I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
jkoenig24 Posted January 28, 2022 Report Share Posted January 28, 2022 Could the connecting tube be plugged? Quote Link to comment Share on other sites More sharing options...
jenandjon Posted January 29, 2022 Report Share Posted January 29, 2022 It's almost always the vent tube but it is possible that one tank got shut off accidently. If you have tank shut offs. Mine does. Quote Farmer, Trucker, Equipment operator, Mechanic Quando omni flunkus moritati-When all else fails, play dead I'm a man, but I can change, if I have to, I guess. Link to comment Share on other sites More sharing options...
dennisvr Posted January 29, 2022 Report Share Posted January 29, 2022 I agree its most likely a venting issue. If the tube itself isn't restricted, the check valve itself may be stuck. The valve is the angled fitting that screws into the tank. Take it out wash it up good and you should be able to blow through it one way and not the other. PS, You need to do both valves, one on each tanks. Quote "It is better to have more truck than you need than to need more truck than you have" 2001 Volvo 660, Cummins 400 ISX, Eaton 3 Peddle Auto Shift 2014 Fuzion 40' Toyhauler 2015 Smart Car Link to comment Share on other sites More sharing options...
Rotorhead Posted February 1, 2022 Author Report Share Posted February 1, 2022 Well I had the day off and checked my new vent tubing. It had been on a shelf in the garage for a year and a half. Well something had gotten in the tube and plugged it. It was like dirt or something. Anyway it’s all cleared up now and it should be working normal again. thanks for all the replies. Quote Link to comment Share on other sites More sharing options...
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