Skip the auto shop - Our mechanics make house calls

Q: Hard time starting car after refueling

asked by on

Whenever I put new gas in the car, it has a hard time starting. The engine has to stutter for a while before it starts. Also sometimes the engine will rev up and down for a while before it runs normal.

A: Hello. It sounds like you may have a bad ve...

Hello. It sounds like you may have a bad vent or purge valve in the evaporative emissions system. Most of the time this is caused by the purge valve. These valves work to contain the gas fumes in the vehicle until they can be burnt off in the engine at the correct times. If the purge valve is stuck open then these fumes will enter the engine while your are fueling. That will essentially cause the engine to run very rich right after fueling, causing it to run like this. A mechanic would typically remove the valve and check its operation or perform a smoke test.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Power window not working

The window regulator may have broke and is binding the motor or the motor is bad. Both of these are common problems, and if you hear crunching when the window switch is pushed, the regulator is broken. If you do...

Q: I have a 2004 Buick Rendevouz that doesn't want to start. At first, it had a hesitation problem and it died at low rp

The camshaft position sensor will make the engine run but poorly. Check the crankshaft position sensor to see if its damaged or unplugged. A damaged crankshaft position sensor will cause a no spark condition. If you need further assistance with...

Q: My car wouldn't start until I sprayed some starter spray

Hello. Typically when one has the results you have with starter spray, you are facing a fuel issue. Did the vehicle continue to run after it started, or did the vehicle start for a moment and then stall? When you...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.