JD 620 gas leaking cap

Farmer MM

Member
1957 JD 620 gas

I've got fuel that spits out under cap.
1. NEW OEM cap (non-vented) put on today.
2. Blew air in to breather tube, can hear it in the tank.

Questions: 1. Any suggestions? 2. The filler-neck top (outer-edge) is slightly bent (over time) down, so the cap-gasket reflects about a 1/32" compression ring. Shouldn't this filler ring surface be FLAT (about 1/8+)? If so, that could be why the gas intermittently spits out there.

THANKS!

Bill
 

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