Posted by oscar on Monday, January 28, 2002 at 3:40PM :
In Reply to: In cab fuel tank problem posted by Mark on Monday, January 28, 2002 at 11:30AM :
My W200 also does this. The correct gas cap is vented but is no longer available. I am planning to move the tank under the bed and install a carbon gas vapor trap like in the newer vehicles.
For now I am careful to open the gas cap to vent the tank. You might cansider using a locking gas cap. A lot of the locking gas caps use a very light spring on the gasket so pressure can escape easier.
good luck
oscar