I know I'm late to the party, but........just some input for anyone who is frustrated with the air bubbles in the clear fuel line from the filter. My Sprinter is a 2003. Supposedly this fix is only for the 2002-2003 Sprinters. I must have re-primed my gas filter a dozen times trying different suggestions. Changed all the o-rings twice, changed to the Euro style filter with no water sensor or bleed screw, used better hose clamps.......still getting bubbles.
In one earlier post, I read someone mentioned the Fuel Return Valve on the top of the fuel filter. That is on the left side of the top of the filter, opposite the fuel supply line. Got one from Europarts San Diego. Part number 611 078 02 49 and cost $22.
THAT finally fixed the problem!!! Strange not many other people mentioned that so I didn't look there for a looooooong time.
In one earlier post, I read someone mentioned the Fuel Return Valve on the top of the fuel filter. That is on the left side of the top of the filter, opposite the fuel supply line. Got one from Europarts San Diego. Part number 611 078 02 49 and cost $22.
THAT finally fixed the problem!!! Strange not many other people mentioned that so I didn't look there for a looooooong time.
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