Q: Engine does not start after fueling

asked by on December 22, 2016

Hi, I have a weird problem recently with my Mercedes B200 / 2006 – after fueling the tank the engine does not start for 60 min. It cranks but the engine doesn’t start. Also the fuel pump is working one can hear it. After 60 min it is all good the engine start normally and the car is running well until next fueling. No matter how much fuel I add 1 litter or a few drops, regardless how slow I add fuel the result is the same – engine won’t start for 60 minutes. I even tried last night adding fuel while the engine was working and there was no interruption and no problem. The problem is when I add fuel in the tank at the gas station with the engine off. Any suggestion or advise is appreciated. Thanks. Stan

My car has 130000 miles.
My car has a manual transmission.

Hi There, It sounds like your car’s evaporative emissions system may have some problems. The EVAP system prevents fuel vapors from the fuel tank from escaping into the atmosphere as you are fueling your car and while the fuel just sits in the tank. 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. When this is not working properly, you may experience the gas pump shutting off prematurely causing it to take a very long time to fill up your fuel tank. This is due to the excess fuel vapor that is present when the purge solenoid is not working properly by releasing these vapors. The gas pumps at the fuel station have automatic sensors on them (for safety reasons) that shut off automatically when too much fuel vapor is present. I would recommend having an expert from Your Mechanic come to your home to take a look at your car to diagnose your EVAP purge solenoid.

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

I just got a P0087 code on my Mercedes.

Hi there. A fuel filter can cause a restriction in the fuel line if the filter is plugged up. If you are getting a P0087 code for fuel pressure rail is low, then put a fuel pressure tester on the...

crunching noise from the front end of the car

Noises like these generally come from worn suspension components or ones that may just require some lubrication. Ball joints and control arm bushings are usual causes for this type of noise. Hire an automotive technician experienced in vehicle steering and...

Is an HDM headlight driver module the same as a relay switch?

Unfortunately many manufacturers will call a part by one name while call it something else. However a module is a computer and a relay is more like a switch. If they recommended a module it is likely a computer failure....

Related articles

A Buyer’s Guide to the 2012 Mercedes-Benz G-Class
Combining Combining rugged performance with an iconic boxy exterior style, the 2012 Mercedes-Benz G-Class is a hallmark of the SUV segment. It manages to combine true off-road capabilities with luxurious comfort and outstanding on-road performance in a way that most...
A Buyer’s Guide to the 2012 Mercedes-Benz M-Class
The The 2012 Mercedes-Benz M-Class is a mid-size luxury SUV that combines utility and comfort to make the perfect every day vehicle. It can handle almost any terrain with its all-wheel drive model. Drivers and passengers will experience a quiet...
Industry News for Automotive Techs: October 22-28
Japanese automakers step up security, Mercedes' X-Class pickup, carsharing with Turo, VW TDI settlement approved, Faraday Future behind on payments.