Is she gonna blow? Gas Tank question
#1
Is she gonna blow? Gas Tank question
I just went ot put gas in my 82 XJ6. When I opened up the left side gas cap, gas just shot out like it was being pumped out. I am sure the pressure in the tank was causing this but why? I opened up the right side and it let out air but no gas (not sure there is any in the tank anyway).
So what is causing this?
Thanks
BOB
So what is causing this?
Thanks
BOB
#2
Join Date: Jul 2010
Location: Austin tx and Daytona FL.
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those stupid crossover valves, are stickin or leakin back
easy and cheap way, is get them out of system, and put simple TEEs in place , both inlet and return lines.
and only fill tanks to around 3/4 way full, it works out good.
and put two fuel filters in system, one from each tank feed(the 1/2" lines), leaky valves says rust is gettin into system.
easy and cheap way, is get them out of system, and put simple TEEs in place , both inlet and return lines.
and only fill tanks to around 3/4 way full, it works out good.
and put two fuel filters in system, one from each tank feed(the 1/2" lines), leaky valves says rust is gettin into system.
#5
Join Date: Mar 2008
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#6
Actually the problem went away before I did that. I went later to check it and it didn't do it this time. The car had been sitting in the sun in 100 degree weather when it happened. I later moved it to the shade and it didn't do it later so now I can't confirm anything other than it happened.
#7
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#9
Yes you can leave them disconnected, but I would advise installing a filter like a fuel filter or breather filter on the hose that used to attach to the plastic one way valve, since this is where air is breathed in for the tanks so they don't collapse due to lack of ventilation. If mud packs the end of the hose closed, there will be inadequate ventilation. So either use a filter or extend that hose and secure it somewhere where it won't get splashed. You don't really want water getting in there and freezing or affecting your gas.
Also, inside the filler necks there is a very small hole on the forward side. It needs to be clear in order for ventilation to work well. Stick a paper clip or pin in there and clear that hole.
By leaving them disconnected, your car will no longer be emissions compliant. The vented fumes from the gas tank will not be absorbed by the charcoal canister and vented into the engine to be burned. The car may also smell more like gas fumes.
Did you remove more than one plastic valve?
Also, inside the filler necks there is a very small hole on the forward side. It needs to be clear in order for ventilation to work well. Stick a paper clip or pin in there and clear that hole.
By leaving them disconnected, your car will no longer be emissions compliant. The vented fumes from the gas tank will not be absorbed by the charcoal canister and vented into the engine to be burned. The car may also smell more like gas fumes.
Did you remove more than one plastic valve?
Last edited by bbarcher; 11-28-2010 at 01:58 PM.
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