01 986 S hard start after fueling need help please

[Turboflyer]

I have poured through countless threads of code 95, canister shutoff valve. The problem I am having is only after fueling and it does not matter if it is 5 gallons or full. Car will not start without holding gas pedal to the floor and cranking about 5 seconds plus. Did the canister , car is an 01 986 S.  I do have a purge valve if it goes into the large plastic box forward and up in the passenger fender well. Just seems very odd it does not do it every time I start. I can literally go through many starts until fueling time with no problem at all. I also purchase the line and valve that gown under the intake manifold but I am just shooting in the dark. Hope someone has experienced the same thing and is willing to help. Thanks 

[Loren]

 

[Turboflyer]

Thanks. That is the line I have waiting to put in. I am just trying to make sense of when the problem occurs. It is only when gas is added. I do not think the vehicle can tell that Fuel has been added since the key is off at fueling. Further when I get home I always add fuel additive after shut down and the car starts fine. I tried just letting the car run since the engine is in the back. It never likes that. So what initiates the leak test?  Again thanks for taking the time to help.

[Loren]

The first thing the car (US/Canada cars) does when you turn the key is look for a fuel or vapor leak.

Leave the gas cap off or if the o-ring is bad will cause a similar issue.

[Turboflyer]

Understand,  so why does this not happen ever time then irrespective of fueling?

[Loren]

My guess would be fuel level or leaking back into the vent line.

[Turboflyer]

That would surely mess things up. How do you think fuel could leak into the vent line. I suppose I could remove the wheel well liner , disconnect the vent line , fill , purge the line and see if she fires up. What do you think?

[Loren]

Not before checking to see if the purge line is open and the purge valve is working.

[Turboflyer]

Will do. Might as well replace it since I have it and the old one is almost 4000 hours run time and 20 years old. Wish I had done that when I did all the other parts under the intake.  Thanks and will post back what happens.