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  #1  
Old 07-02-2007, 04:39 AM
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Charcoal Canister in my Mercedes flooded with gasoline???!!!!!



Can anybody help me with this problem?



I have Mercedes E320 1998 v6. The problem started one night after I have filled the fuel tank. Next day; engine stops suddenly in the traffic, and while I'm driving seem that it will stop. At the beginning I thought itís a problem with the fuel filter (already replaced 10 days ago). With computer check it has been found the following faults. p0450 (Evaporative Emission Control System Pressure Sensor Malfunction) and other code that I donít remember but they told me itís the fuel level sensor.



With the tracing of the problem they found that there is leak from the vent fitted above Charcoal Canister and the Charcoal Canister flooded with gasoline. So the Charcoal Canister instead of supplying gasoline vapours to the engine it was supplying liquid gasoline.



After spill of the gasoline in the Charcoal Canister engine runs better, but after filling the fuel tank (3/4), problem reoccurred.





Can anybody help me with this problem?


Or any suggestion? Because I'm confused some people says itís a problem in the Charcoal Canister (there is diaphragm inside it)



and another person says itís the engine computer control ( which I donít think)
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  #2  
Old 07-02-2007, 08:03 AM
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Somewhat a common occurrence on 1996 & later cars with OBVR (on-board vapor recovery) systems. ON those models when the auto shut-off stops filling the tank DON'T try to top off the tank OR damage to that OBVR will happen.
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  #3  
Old 07-02-2007, 12:33 PM
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Any suggestion on how to get rid of this problem

After the incidence of this problem


As I have mention before after emptying the charcoal canister the engine seems better running. But after filling the tank 3 quarter of the full level, within 5 km the problem occurs again.




This car is an American system and especially I'm living the Middle East, there is problem in finding this kind of parts. So if any body can suggest which parts exactly I might need to replace




many thanks
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  #4  
Old 07-02-2007, 04:11 PM
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Start by replacing the damaged charcoal cannister.
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MERCEDES Benz Master Guild Technician (6 TIMES)
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Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
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MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
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  #5  
Old 07-08-2007, 05:10 AM
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thanks

today i have placed an order with mb spare parts


i hope its the end of the problem


many thanks
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  #6  
Old 07-08-2007, 07:20 AM
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Quote:
Originally Posted by hussain2002cab View Post
today i have placed an order with mb spare parts


i hope its the end of the problem


many thanks
Good luck,

keep us informed of the outcome
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  #7  
Old 07-16-2007, 06:32 AM
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One more thing I want to mention, that when I left the fuel tank cap open, the car runs without any problems. I have mention that there was a negative pressure inside the fuel tank.

is the any thing else I might need to check???
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  #8  
Old 07-16-2007, 12:17 PM
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The purge valve may have been damaged by the raw fuel as well.
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  #9  
Old 08-16-2007, 12:43 PM
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job done thank you very much mr M.B.DOC
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Old 08-16-2007, 12:43 PM
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