Hello,
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.
Mike