Slow start after filling the gas tank.

[pat247]

My Raptor has been exhibiting a slow or weak start after filling with gas, it has not failed to start but something is going on. I don't top off after the pump shuts off as I've read it will cause problems. I'm not familiar with the fuel system so any help would be appreciated.

 

[Vash]

Probably a sticking canister purge valve solenoid. Check out this video and test to see if the valve is stuck open and creating a constant vacuum leak. Part number is CX2191 or 9U5Z9C915BE.

 

[pat247]

Thank you I suspected the purge valve but had no clue where to look or how to test. I hope this is all it is.

 

[pat247]

Replaced the canister purge valve and it seems to have fixed the weak/slow start after filling the fuel tank.