fj40 gas tank leak (1 Viewer)

Joined
Dec 2, 2005
Messages
14
Location
HOT ASS AZ
In the summer, my gas tank, if filled with gas, will leak gas where the cap is. Because of this reason, I can only fill my tank up halfway, especially when it is really hot. One day I realized that my driveway was doused in gas! Does anyone else have this problem?
 
Joined
Jul 15, 2004
Messages
167
Don't top it off unless I'm going to drive aways right after. Sorry don't know anyother answer.
 
Joined
Aug 16, 2003
Messages
1,399
Location
granite falls WA.
there should be a vent to the tank (not sure on early ones) maybe its pluged ? if all else fails drill a small hole (as small as possible) in the center of the cap or buy a new vented cap ?
 
Joined
Dec 2, 2005
Messages
14
Location
HOT ASS AZ
'69 FJ55- The kid's future car

Trust me, it is a rust bucket beyond belief! My husband and i picked it up 3 hours away from our house (while i was pregnant), and as my husband is driving the '55 back, he's wondering why he is slowly falling. Turns out that there is no floor whatsoever on the drivers side. We're talking Barney Rubble style here! Just glad he didn't leave his a** on the highway!


if all else fails drill a small hole (as small as possible) in the center of the cap or buy a new vented cap ?

thanks! i'll give the new cap a try for sure. the seal around mine is hard as a rock anyway! not good.......
 
Joined
Jan 3, 2003
Messages
7,184
Location
McCall, ID
A lot of underground tanks are cold (at the gas station) and the gasoline just gets bigger in a hot car. I stop filling the first time the hose clicks off.

Vented caps are important on these rigs, but they won't stop the gas expansion issue. If the gas cap isn't vented, the expansion may be around the filler hoses, and in an FJ40, at least, you'll get fumes in the cab, since that's where the fuel tank is.
 

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