Petcock rebuild kit is on, but petcock is still leaking through RES and ON

[pastelvice]

I followed the instructions to the letter, but when I hold the tank up, it's still leaking through the valves a little on ON and RES. When I hooked the tank back up, fuel dripped from the overflow.

What should I look for? When I look through the valves when the tank is off, it is engaging when I turn from prime to ON, but I'm not sure that it's turning enough.

[DumbLuck]

check the spring holding the diaphram closed, and valve orientation. you may have put it back in upsidedown. also, look for loose/bad O rings/seals and gouges in the petcock body itself. there's a reason it aint sealing, you just gotta inspect it close to find it.

[pastelvice]

I appreciate it, I figured it out. The previous owner or somebody had that white, square piece on backwards. When I put the petcock back together, I just put it on the way I took it off. I took it back apart, turned the white square piece around, and mounted it. It works now.