CAR PURGES FOUR TO FIVE MINUTES AFTER STARTING WHILE IDLING, MY CANISTER IS BY FUEL TANK; PLACING FINGER OVER AIR INTAKE I CAN FEEL AIR BEING SUCKED IN. There are no fault codes stored or pending, so evap leak out of the question. Is there a fuel tank pressure sensor attached to the tank or in the engine bay. My thoughts lay with the canister and life expectancy whether it is blocked. Any help would be appreciated in this matter. regards grampy21
i am having trouble refuelling my car, i have checked the purge value with obdII on 2007 Volvo C70
by grampy21 in Tacoma, WA on February 15, 2014
1 answer 3 comments
ANSWER by ProfessorG on February 15, 2014
Unhook the hose to the canister and fill the tank. The EVAP has to vent, not suck to be able to fill the tank.
COMMENT by grampy21 on February 16, 2014
Thanks for getting back to me.I would not drive along with my hose un-attached from canister to fuel tank! so you want me to disconnect purge line from valve under the bonnet is this correct. kind regards Graham
COMMENT by ProfessorG on February 16, 2014
Was just suggesting you disconnect the canister when needing to fuel to verify the system was sealed without being able to vent, and a possible clogged canister. Didn't expect you to drive around with it unhooked.
COMMENT by grampy21 on March 07, 2014
I tried disconnecting the vent line from fuel tank, still the same! have got it down to stuck roll back valve/ or distorted. may be some ideas to budge it without removing tank. regards Graham