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Bulldogie (69.4.194.35)

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Posted on Thursday, May 27, 2004 - 7:40 pm:   

The main fuel tank on my bus has a air relief or intake air tube at the front of the tank on the upper part of the tank. After taking out the tank to fix a seam leak I found that there is also a second relief pipe just behind the upper tank position. It looks like this could be pluged because if you were on a steep (left side higer than the right)incline with a full tank that this could cause an over flow problem. Question (finally) will it be ok to plug that hole since I have the tank out? It would seem that the other pipe which is a lot higer than the lower one would be plenty of air for the tank. Also is there a filter that one can put on the air intake to keep out the dust and the dirt? Thanks for your help in this,
TWO DOGS (158.254.224.202)

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Posted on Thursday, May 27, 2004 - 8:00 pm:   

I'd say one of them has a pipe that goes to within 2" of the bottom...just guessing...I'd plug that one "if" you want...'course "I'd" put a tiny amout of silacone in it & let a bunch run out....to make a "removable mushroom", in case somebody,someday wants to hook up a genset......................blow on them (with a little liquid in the tank)...one will burble....like a kid with a soda straw...
Jim Ashworth (Jimnh) (172.136.221.6)

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Posted on Thursday, May 27, 2004 - 10:17 pm:   

You mention the "main" tank. I'm going to assume you have an auxiliary tank. One of these vents is to allow air to escape from the aux tank into the main tank for venting, the other is the whistle vent which is the main tank vent which will whistle when filling. It will stop whistling when the foam gets into it, indicating a full tank. Aux vent is on top and the whistle vent is on the upper end of the tank facing the access door.

If, however, someone removed the aux tank, you may have the aux tank vent, in which case, it should be plugged. Boy, it's tough to really diagnose this stuff without seeing it. Hope this is of some help.

Jim
Bulldogie (69.4.195.79)

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Posted on Thursday, May 27, 2004 - 11:39 pm:   

Guess I should have said that I have a aux tank and there is a third pipe that goes to the aux tank. The pipe that goes from the front of the tank goes all the way down to the outside of the bus, that was the one I was thinking about trying to think about finding a way to keep the road dirt from being sucked into the fuel tank. When I was driving the bus home I didn't seem to have a problem till I got almost home and then I filled the tank as full as I could get it, and I had trouble from I-44 all the way going down US-71 towards Fayettville Arkansas. Finally made it home and that pipe that sticks down outside the bus was full of road gunk and was all stopped up. Cleared it and the bus has run fine since. That is why I was wondering about the filter system for the front pipe and also about capping the other pipe that seems to do nothing but vent the lower part of the main fuel tank. Hope that helps?

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