I do not know if fuel coming out of the canister is related to changing the fuel filter. The fuel filter on the xfire is also a fuel pressure regulator and check valve. Best to use OEM part A 002 477 30 01 filter. There is also a check valve in the fuel pump.
I would think fuel at the canister would cause a DTC, diagnostic trouble code; you should connect a scan tool and check. It should help narrow the possibilities as to where the problem originates.

 

 

 

It is not a fuel line between the filter and the canister. I believe it is breather that allows the diaphragm that regulates pressure in the filter to work and breath or oscillate properly. IF the line between the filter and canister is leaking or discharging gas then you should replace that filter you bought with a proper OEM filter. Buy it from Germany auto supply, PartsGeek or your friendly Mercedes dealer just ask for a fuel filter for a 2003 SLK 320. I gave you the part number in a previous post.

 

Here is the Evap Circuit.

 

Thanks 180, good diagram which reminded me that one of the four ports on the fuel filter is an overflow discharge/recirculation back into the fuel tank. Hopefully Ronnie&tab has not mistakenly switched that line and has it connected to the canister in error.

 

I don't have a solution to your issue, but I do have a warning. If you have liquid gasoline in your evap canister, do not drive your car. Years ago this happened to V6 GM cars. For some reason the evap canister would fill with gas and then when the valve would open to purge the canister, it would suck that gas right into the engine and hydro lock it. Hydro locking an engine when cruising down the highway causes the engine to fly into many pieces. Saw it a number of times.

James

 

 

I think you are correct once again 180. The OP stated in post #1 "The fuel filter that I bought was an aftermarket wondering if that might be my problem."

I gave him the OEM recommendation in post #2 and hopefully that will help him get this straightened out AND he reads and heeds the advice of James!

 

How do i remove my charcoal canister.

 

It is under the plastic shield at the passenger side rear axle, Disconnect all the hoses and electrical connection ( pay attention to where they are routed) and the canister will slide inward off a bracket on it's front side.

 

Thank you i was prying on it but was afraid i would brake it.

 

i have seen this before when someone hooked he lines to the fuel filter up incorrectly, then realized it when the car wasn't running and then got them sorted. although they pumped gas into their charcoal canister before figuring it out. did you do the work or was it a shop that may have done this and not told you about the "hiccup"

 

I took it off was just checking for fuel. I'm getting a hesitation and rough idle. Only codes im getting is gross evap leak. What i found was one of the lines going into the canister is broke off at the canister had to order one. Then i found a line on the filter was broken to. Hope this fixes my problem.