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

asked by on February 02, 2017

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

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

Rough idling after sitting for a few days

Hello. If the ignition coils are misfiring, this could cause the spark plugs to misfire and the car may idle rough. If this is the case, the ignition coils will need to be replaced in addition to the spark plugs...

Where is location of crankshaft sensor on 2011 BMW 550i 4.4 v 8

The crankshaft position sensor is located on the transmission bell housing on the passenger side. You have to remove a plastic splash guard that is attached with a Phillips head screwdriver. Remove the aluminum transmission guard with a 13 mm...

Thick white smoke coming out of tailpipe

Hi there. White smoke is an indicator that coolant is getting into the combustion chamber and exiting out the tail pipe. When you overheated the engine, the cylinder head gaskets blew and the head or block might have cracked from...

Related articles

A Buyer’s Guide to the 2012 BMW 335d
Of Of all of the BMW 3-Series models available in this model year, the 2012 BMW 335d is one of the most powerful and subtlest on the road. This 4-dour sedan may look mild-mannered enough, but under the hood it’s...
A Buyer’s Guide to the 2012 BMW 1-Series
The The 2012 BMW 1-Series, which includes both the 128i and the 135i in both a coupe and convertible options, provides the perfect combination of power, performance and luxury. Designed with a focus on thrilling acceleration and a smooth, elegant...
A Buyer’s Guide to the 2012 BMW X5 xDrive35d
The The 2012 BMW X5 xDrive35d offer contour seats and smooth acceleration. The suspension offers a smooth ride to the driver and passengers in the vehicle, even for long road trips. It can handle tight curves without any problem while...