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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Whether you think you can or cannot, Either way you're right!. by Henry Ford.

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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1959 Gravely LI, 1963 Gravely L8, 1973 Gravely C12
1982 380SL
1978 450 SEL 6.9 euro restoration at 63% and climbing
1987 300 D
2005 CDI European Delivery
2006 CDI Handed down to daughter
2007 GL CDI. Wifes

which vent hole will this be on the canister ?

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Whether you think you can or cannot, Either way you're right!. by Henry Ford.

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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A.S.E Tech A1,A6,A7,A8 & MVAC 609 + EPA 608

Unless stated otherwise, any question I ask is about my greymarket 1985 380SEL.