are your tanks vented via a cap or charcoal canister?
CK5
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I only ask because I had a similar problem, and it wasn't until the trail slowed down and the truck got a little hotter with ambient temps around 90-95. We stopped for a piss break and the truck wouldn't refire, pump was loud so I removed the gas cap and it let out a solid stream of air for over 20 seconds. Guess my cap was not vented after all. Also, the line from the tank vent was plugged in the bed so I removed the plug and left it open. 10 minutes later the truck fired and never had a problem again.
454Sub
5/8 ton status
My tank was plugged when I got it too.
Took awhile to figure it out. Ended up hooking it back up to a factory replacement charcoal canister. Works fine just like stock basically.
Took awhile to figure it out. Ended up hooking it back up to a factory replacement charcoal canister. Works fine just like stock basically.
for safety reasons I'll probably end up running a charcoal canister too.
Gas engine problems....
wanna race?
beags86
Eastbound and Down
Let's flip over to any 6.2 thread and talk about glow plugs for 4 pages....
beags86
Eastbound and Down
The 6.2, smoking you out since 1982.
beags86
Eastbound and Down
They post videos trying to outdo each other... Lol nevermind the lung cancer!and white smoke at startup
cheech and chong would be jealous
beags86
Eastbound and Down
Only white smoke a 454 knows 
But Ethan and Greg wouldn't know.
But Ethan and Greg wouldn't know.
I hadn't even consiered that it could be tank venting problem. But at the same time, one would think that the likelyhood of both tanks either pressurizing or developing vacuum would be small. Maybe I'll just mount my TBI burb tank...
beags86
Eastbound and Down
Happen to crack open a line at the tbi to see if you were getting fuel?
the problem is the line between the selector valve and the throttle body has likely already vapor locked so switching tanks won't help.
No. I should have, but I was more comfortable not working on it, and just waiting.
beags86
Eastbound and Down
Would have interesting to know if you cracked the line and it started to pump.
more than likely would have
Both of which I do not and have not had...ive got both bases covered though...and white smoke at startup
