I'm a newbie to this site, but, I have checked all posts and can't find anyone having the problem I'm having. Here it is, I've got a 421 sbc injected alky altered. After I shut it down in the staging lanes, then when restarting, it revs up to maybe 3000 rpm, then immediately slows down to about 3-400 rpm, it just barely runs, then, it will come up on the pump and run fine. I think that my idle check valve which is set to 2psi is maybe leaking fuel past it because it's at the very bottom of my tank which is at the bottom of my chassis. Can anyone help me with this?