Yours is a pretty simple test. I like that. 

Karl Wolz
Sent from my electronic umbilicus

> On Jul 16, 2014, at 2:41 PM, "kenneth wilford (Van-Again)" <kenwilfy@COMCAST.NET> wrote:
> 
> Had a customer that had a great running van, but he was getting a whiff of
> gas every time they filled up with gas.  So they had a local shop (not us)
> replace the fuel lines on the top of the gas tank.  However after the gas
> tank reseal, now they are having a strange running issue.  The van will run
> for about 30 minutes and then seem like it is starving for fuel.  The shop
> where it is now is scratching their heads and assuring the customer that it
> can't have anything to do with the gas tank reseal.  I think that it does
> have something to do with this, and my theory is that for some reason, the
> gas tank vent is blocked allowing vacuum to build up over time and
> eventually starving the van for fuel.  Has anyone else experienced this
> problem?  I am thinking a good way to test it is to have the customer
> remove the gas tank cap once the van starts acting up just to see if
> pressure is released.
> 
> Of course it could be that maybe the charcoal canister is blocked and the
> leaking vent hoses were actually preventing this problem from happening
> previously.  Now that everything is sealed up tight, it is actually causing
> a problem since there is no outside air coming into the gas tank.
> 
> Any ideas you folks have would be welcome.
> 
> --
> Thanks,
> Ken Wilford
> John 3:16
> www.vanagain.com