Problem: The customer stated that, no matter how
low or full the tank was or how much fuel they added, the engine
would crank but not start. If they let the car sit for a few
minutes, the engine would start normally and run fine. The
malfunction indicator light was not illuminated.
Details: The tech suspected a flooding or
excessive vapor issue. He first verified that the fuel tank vent
line was clear and allowing pressure to escape while refueling.
It was open.
Next, he removed the vacuum/vapor line that leads from the purge
control solenoid to the vapor canister and disconnected the
electrical connector to eliminate a possible purge commanded at
idle. The tech filled the fuel tank and tried to start the
engine. Because there was no vacuum to the valve, there was no
fuel vapor flowing through the purge control valve from the
canister to the intake manifold. The engine started normally.
Confirmed Repair: The tech verified that the
purge solenoid was faulty by applying power and ground to the
solenoid. With power to the valve, it opened. With power off, the
valve was still open. He replaced the purge control solenoid and
the problem was resolved.