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Old 09-16-2009, 07:09 PM
Benz300's Avatar
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Location: new jersey, usa
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gas not pumping at the station...

00 E430 4matic.

I simply can't seem to put gas in the car without the gas pump shutting off every 5 seconds. I do hear something weird as if there's a pump operating while I'm trying to fill up the gas. The sounds seems to be coming from where the charcoal canister is located. more over after every time the gas is filled a little bit and I take the gas pump nozzle out, fuel literally splashes back as if there was some vacuum build up inside...

I do have rough idle, and the low fuel light blinks along with the check engine light that came on.
I've already replaced the gas cap seal. that didn't solve it.

thanks in advance.

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Old 09-16-2009, 10:08 PM
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Location: Southeast Wisconsin
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Quote:
Originally Posted by Benz300 View Post
00 E430 4matic.

I simply can't seem to put gas in the car without the gas pump shutting off every 5 seconds. I do hear something weird as if there's a pump operating while I'm trying to fill up the gas. The sounds seems to be coming from where the charcoal canister is located. more over after every time the gas is filled a little bit and I take the gas pump nozzle out, fuel literally splashes back as if there was some vacuum build up inside...

I do have rough idle, and the low fuel light blinks along with the check engine light that came on.
I've already replaced the gas cap seal. that didn't solve it.

thanks in advance.
It sounds like your vent hole is plugged. The fuel itself is creating the pressure as it enters the tank and it is not being released.
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Old 09-17-2009, 03:56 AM
Benz300's Avatar
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which vent hole will this be on the canister ?
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Old 09-17-2009, 10:39 AM
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Originally Posted by Benz300 View Post
which vent hole will this be on the canister ?
The vent hole @ the tank, though the 'clog' could be anywhere from there to the canister. Might unplug the line at the canister and see if that clears it up. Not sure about benz's, but most canisters have little solenoids that open & close to trap/release fuel vapor. Could be yours went bad.

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