Skip the auto shop - Our mechanics make house calls

Q: The car has trouble starting after gas tank is filled up

asked by on

My car has around 110,000 miles on it. When I fill the gas tank up, the car has trouble starting. It happened several times already. I would then try for a while until I start it up again. After that, the car would run fine until I fill the gas tank up the following time. I went to a shop for this but they couldn't fix it. Do you have any idea why this happens? Thank you.

A: When you fill your gas tank, a lot of fumes...

When you fill your gas tank, a lot of fumes build up in the fuel tank and usually excess fumes come out of the fuel filled tube and out to atmosphere or into a recovery system in the fuel pump handle.

You may have a purge valve that is not sealing correctly and the fumes are going into your engine causing your engine to be flooded with fumes while you are refueling. You can help your car start by holding the throttle wide open to get extra air into the engine to get it started, and then letting off the gas once it starts. This is only a way to get it started after refueling until you get the purge valve replaced to fix the problem. If the problem persists, have a mechanic, such as one from YourMechanic, diagnose your car’s hard starting problem to verify what needs to be done.

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: Bad steering problem, fluid leaked and parts might need replacing

The Rack and Pinion leaking has been an ongoing issue with 2007-2011 model GM vehicles equipped with this rack and pinion/steering pump combination. The reason the whole part (rack and pinion unit) has to be replaced is because the particular...

Q: Problems or issues with the porche panamera

As you know, with any car the life expectancy of it depends largely on the maintenance schedule the owner has maintained, the driving conditions it is subjected to, the driving habits of the owner and many other factors. Often times...

Q: Leaking gas tank and power steering hose

It sounds like you have a couple of serious issues going on. A fuel leak can be dangerous so that must be repaired first. Many times this car can develop a leak at the fuel pump connection and look like...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...