07-12-2009, 02:09 PM
I actually rode the trail yesterday with a real gascap installed!
Here is the problem I ran into.
I let the rig sit at idle for about 20 minutes and not at some extreme angle or anything. When I came back fuel was dripping from the fuel cap. When I cracked the cap there was a LOT of fuel that wanted to come out so I tightened it back up. It was under quite a bit of pressure.
I do run an EFI system so I thought maybe the return line was feeding more than the engine was consuming so I drove for about 5 minutes to try and neutralize the tank overpressure situation by consuming more fuel than would be returned to the tank but it did not help.
I thought maybe it was because I had just filled the tank up that morning and there was very little air for the cap to release so it released fuel instead. That makes me wonder if the pressure is a normal condition and I just never notice it because it is not fuel being vented.
I ended up parking the truck at an angle to allow the air to move to the filler side of the tank and was able to remove the cap to release the pressure without loss of fuel.
Can someone confirm this for me?
Here is the problem I ran into.
I let the rig sit at idle for about 20 minutes and not at some extreme angle or anything. When I came back fuel was dripping from the fuel cap. When I cracked the cap there was a LOT of fuel that wanted to come out so I tightened it back up. It was under quite a bit of pressure.
I do run an EFI system so I thought maybe the return line was feeding more than the engine was consuming so I drove for about 5 minutes to try and neutralize the tank overpressure situation by consuming more fuel than would be returned to the tank but it did not help.
I thought maybe it was because I had just filled the tank up that morning and there was very little air for the cap to release so it released fuel instead. That makes me wonder if the pressure is a normal condition and I just never notice it because it is not fuel being vented.
I ended up parking the truck at an angle to allow the air to move to the filler side of the tank and was able to remove the cap to release the pressure without loss of fuel.
Can someone confirm this for me?
'77 351w- Explorer EFI, 4R70W, 4-link, lockers, 4.56, 35" MT/Rs with a severe rock addiction.
mokin:
Roads? Where we're going, we don't need roads.
![[Image: sig2.jpg]](http://i288.photobucket.com/albums/ll176/mchuzie/sig2.jpg)
mokin:Roads? Where we're going, we don't need roads.