When engine bog down or surge when taking off sound like fuel filter partially stopped up also some injectors or a weak fuel pump.
An evap vent valve malfunction generaly will not cause any drivability issues.
a surge under light acceleration and lack of power could be caused by a fuel delivery problem sutch as a plugged filter or a weak pump. it could be a malfunctioning o2 sensor or even a vacum leak.
without a scan tool to view the engine data and trouble codes, you could be in for a hair pulling experience trying to pinpoint the problem.
372 views
Usually answered in minutes!
×