Roger lin

hi all , i had a 2008 s550 recently got a strange problem with refueling gas , i could't got fuel tank fully at a time by fuel gun ( the fuel gun alway cut off during adding )

anyone else experience any of the above issues ?



Roger

MichaelB.

A few of us have seen this. Here was a thread about it at one time:

https://mbworld.org/forums/new-s-cla...ueling-up.html

I had mine repaired with details/help from the original poster of that thread.

It ended up being the charcoal canister valve on both of our cars. Now both are 100%.

Roger lin

Thank you very much for your reply MichaelB , I have replced the charcoal canister (as attached photo ) ,the symptom seem to be improving but the problem still exist !

chipps

I have recently been seeing the same problem as well.

Roger lin

i have no idea with this problem ,one of mine friend working in the Benz dealer as a technician ,he told me that could be somewhere jam from fuel tank neck to fuel tank ,is that possible ?


thanks for attention ,


Roger

MichaelB.

The fuel neck is absolutely tiny for our tanks. I had an S-Class tank out of the chassis and a group of us marveled over the lack of overall diameter of the fill tube. If it was crushed even a little bit it would cause quite the flow problem. However the neck is pretty well guarded by the wheel well liner etc.

Try another gas station fill rate and see if that makes a difference.

MBtech1098

Have seen this a few times...the whole fuel tank replacement cured it. The neck is part of the tank on a 221.