Quote Originally Posted by LoveThySpatula View Post
Well put the new pump in and it runs worse than before, so I am at a bit of a loss. I did notice there is an inline check valve installed, and because the new pump has a check valve, I'll be removing the extra valve when I get the time (about two hours a week) to see if that helps.

With the new pump installed, I had to do the plug swap to even get it started - no biggie, I figured there was air in the lines. At first, it wouldn't run after swapping the plugs back. Finally started idling normal, but once again, no acceleration. Gave it gas and it died right away - worse than before. And it happened every time after I got it restarted as well.

Looks like I'm back to square one, any other ideas?
Maybe a trip to the repair shop?
Should have flow rate tested the pump before going to the trouble of replacing it, but that's water under the bridge now.

What pump are you now running, and what inline check valve(s) do you have installed? Can you post a pic of your current fuel tank set-up?

Having an extra check valve in the feed line isn't going to cause the type of problem you're describing, thus don't bother uninstalling a nice inline one that you've already installed.

If you haven't done this yet, try unplugging the bulkhead connectors under the coil cover. Make sure that none of the pins in either the sockets or the plugs has backed out. Spray some electrical contact cleaner both in the sockets and in the plugs. If you notice any severe oxidation on any of the pins, clean it off as best you can. Reconnect everything and see what you get.

Best luck