I have a problem with a leak on the differential pressure valve (also know
as the EHA valve) on my 300E--it's the little black box that screws to the
back side of the fuel distributor.
Before I replaced the two o-rings, gas was actually dripping off of the
bottom of the valve. Now that I've replaced the o-rings, fuel is not
dripping nearly like it was but it's still not completely sealing between
the valve and fuel distributor. I wiped of the mating surfaces well and the
screws seem to be tightened properly.
Against my better judgment, I'm thinking about taking a light pass with some
emery cloth on both surfaces to see if that would help. Can anyone suggest
what else I can do to get a better seal. I hate to think that I'm going to
need to buy a new valve for $200 and find out that I still have a leak.
Thanks in advance for any advise.