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Engine does not start after fueling

Tiny
STAVAR
  • MEMBER
  • 2006 MERCEDES BENZ
  • 2.0L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 130,000 MILES
Hi,
I have a weird problem recently with my B200. After fueling the tank the engine does not start for sixty minutes. It cranks but the engine does not start. Also, the fuel pump is working one can hear it. After sixty minutes it is all good, the engine starts normally and the car is running well until next fueling. No matter how much fuel I add one litter or a few drops, regardless how slow I add fuel the result is the same the engine will not start for sixty 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
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Thursday, December 22nd, 2016 AT 3:13 PM

3 Replies

Tiny
STEVE W.
  • MECHANIC
  • 12,962 POSTS
One fairly common cause of this is a failed EVAP purge solenoid. It sticks open and basically makes the fuel mix to rich to ignite.
If the manual is correct (using the US book) the valve is easy to get to right at the top front of the engine. To test if it is the valve you could disconnect the hose going to the tank and plug both the hose and the valve inlet. Take it to the station and put some gas in. If it starts right up when it normally would not, change the valve (also appears very easy).
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Thursday, December 22nd, 2016 AT 6:36 PM
Tiny
STAVAR
  • MEMBER
  • 2 POSTS
Right on the spot - it was failed EVAP purge valve indeed.

Thanks
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Thursday, December 29th, 2016 AT 10:35 AM
Tiny
STEVE W.
  • MECHANIC
  • 12,962 POSTS
You're very welcome. Thank you for using 2CarPros. Com Come back with any auto related questions, we're here to help.
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Thursday, December 29th, 2016 AT 12:10 PM

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