Fuel System
#1
Fuel System
Is the fuel system pressurized or under a vacuum? I'm almost sure it's pressure and if it is how do they pressurize it. I'm having trouble with my aux fuel tank setting the loose fuel cap alarm. I only happens when it's empty and the main tank is at half, I think its a volume thing but not sure. The only thing I changed when I installed it in this truck is I removed a piece of plastic that was blocking the vent line, I may have to block it back off. I vent into the vapor recovery line in the filler neck.
Denny
Denny
#2
#3
#6
I dont no the configuration of your system but if there no other vent on that tank, do not install a cap with no vent,when the tank get lower in fuel a vacuum will be create by itself, or you starve in fuel pressure or the tank shrink.you must install a tube on that aux tank and joint it to the main system on the truck.Be careful not every mecanic
anderstand well the evaporative system and how its work.
good lock
anderstand well the evaporative system and how its work.
good lock
#7
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#10
I guess I circumvented that issue while being unaware of it.
I have a 12 volt shut off valve in line with the pump that draws the fuel from the aux. So when I turn off the switch the line is closed by the valve also - did that to insure no siphoning.
I vented the aux via a hose and filter down thru the truck bed and to the atmosphere. The aux tank has a roll over valve in it also.
I have a 12 volt shut off valve in line with the pump that draws the fuel from the aux. So when I turn off the switch the line is closed by the valve also - did that to insure no siphoning.
I vented the aux via a hose and filter down thru the truck bed and to the atmosphere. The aux tank has a roll over valve in it also.
#11
I guess I circumvented that issue while being unaware of it.
I have a 12 volt shut off valve in line with the pump that draws the fuel from the aux. So when I turn off the switch the line is closed by the valve also - did that to insure no siphoning.
I vented the aux via a hose and filter down thru the truck bed and to the atmosphere. The aux tank has a roll over valve in it also.
I have a 12 volt shut off valve in line with the pump that draws the fuel from the aux. So when I turn off the switch the line is closed by the valve also - did that to insure no siphoning.
I vented the aux via a hose and filter down thru the truck bed and to the atmosphere. The aux tank has a roll over valve in it also.
Denny
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76 F250 4X4
1973 - 1979 F-100 & Larger F-Series Trucks
6
11-10-2003 01:00 AM