[TQ29m]

A quick question, did you say your main feed line goes to the shut off valve, then thru the pump? I hope not, good way to destroy a fuel pump, should go thru the pump, then the line from the pump to the barrel valve should contain the shut off, either on the pump, or on the barrel valve, also, the hi-speed sounds really high, I might suggest something closer to 48-56 psi. The thing about hooking all the lines together that bothers me is, one, the fuel doesn't get to de-arieate, it doesn't get cooled by going back to the tank, and if you have a problem like you're having, it's easy to ck, just by looking in the tank. One thing at a time, but it would be easy and quick to ck the timing, make sure it's right, also, if you are using a timing light, make sure it's real bright, you magnets may be getting weak, and in need of re-zapping. Bob