Q: I just put fuel in my vehicle and now it won't start

asked by on

I just put fuel in my BMW and now it will not start

My car has 97300 miles.
My car has an automatic transmission.

Hi There, It sounds like you may have an issue with your evaporative emissions control system. Your car has a small purge valve called a purge solenoid in the Evaporative Emissions system that controls the venting of fumes from the fuel tank as these fumes build up inside, particularly when you are refueling the car with gas. The EVAP system prevents fuel vapors from the fuel tank from escaping into the atmosphere. The EVAP system collects and temporarily stores the fuel vapors in the charcoal canister. The charcoal canister is filled with activated carbon pellets that can absorb the fuel vapors. When the engine is running, the fuel vapors are purged from the canister and burned in the engine. The vent control valve (solenoid) controls the flow of outside air in and out of the charcoal canister. The vent valve is controlled by the engine computer (PCM). Normally the vent valve is open. It closes when the engine computer tests the EVAP system for leaks. If a leak in the EVAP system is detected, the Check Engine light will illuminate on the dash and the trouble code related to the problem will be stored in the engine computer. When an air leak is present in the EVAP system, the MAP sensor will not be able to determine the air density, and the MAF sensor will not be able to determine the volume of air, entering the engine correctly. This will lead to an over fueling situation or an under fueling situation depending on the size of the air leak and engine operating speeds and load. This may eventually lead to catalytic converter problems as well as misfiring problems. I would recommend having an expert from Your Mechanic come to your location to diagnose and inspect your vehicle.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I just put fuel in my vehicle and now it won't start

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: Q: Brake pedal going to the floor

The brake pedal pushes on a rod that goes to the master brake cylinder. This, in turn, sends brake fluid to all of the wheels through the lines to the brakes at each wheel. If your pedal is going to...

Q: I drove without coolant for about 20 miles and the radiator fan is making a loud noise, how do I fix it?

There could be problems with your water pump, coolant lines, radiator overflow reservoir or the radiator that is causing a serious leak. Driving without coolant for any period of time can cause damage to your radiator or other cooling system...

Q: VW POLO starting problems

Hi there. Your symptoms suggest 2 possible scenarios: additional clarification in a subsequent question would be helpful. If the car won't turn over, that could be a failed battery, ignition switch, starter solenoid, or starter. If the engine turns...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...