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Walbro 255 MOD help


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Having issues with this mod. It’s going back into the sending unit really tight. Can hear the pump when key on 2. Car will fire for half a second then lose fuel pressure. Works with stock pump.

 

2005 legacy GT, tuned on the stock pump - 304 horsepowers.

 

 

Only thing I can think is the sock is too hard on the bottom and cutting flow off. I’m afraid if I grind more of the pump off I’ll lose the springs. Any advice?

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Stock basket. Bought the correct size o rings, tried just a single one. Tried one under the pusher upper thing and one above. Just tried doing new o ring on top of the pusherupper thing with the stick o ring on top of that still nothing. Gas is still squirting up from around the o ring, it’s not seating correctly. Only thing I can think of is Walbro changed something and the o ring that’s supposed to work, isn’t correct anymore. Any insight?
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