Well, I'm having a fuel pressure or supply problem. Here's the history. I had a starting problem. Sometimes it wouldn't start on first cranking attempt. 2nd cranking attemp would fire right up. Then at various times it would nose over while accelerating. Then fp(stock) died. I replaced it with a Walbro 255. Starting problems dissappeared (short lived) but then started doing it again. Then would run out of fuel while driving. hooked up a fp tester and watched it (sticking out of the cowl hood) while driving. Fp would drop from 39 all the way down to 18 and anywhere in between. Put on a Kirban afpr. 39lbs at idle (with vac) 43 without. With a slight free rev in park it will increase to 43 when vac. reaches 0. While driving (not dependent on boost, just accelleration) pressure will hold for awhile (it will seldom increase with boost)then drop steadly. (Pump SOUNDS fine while idling although seems to be Really spinning btw.) When pressure drops and it bogs out while driving I can cycle the ignition (coasting in N) off and restart and pressure is back! for a little while. When it drops I can cycle the ignition quickly and its ok again for a short time. Also when it doesn't start I don't have any fp and the pump is either not on or very quiet. When I turn the key again (sometimes twice)pressure will come up and it starts fine. These are all problems common between the stock regulator and the Kirban. The pump is running on the stock wiring. Could the pump be bad? It only has about 150 miles on it. When I replaced the pump I flushed the tank, the lines and put on a new filter. I tried a new relay also. The only codes it throws is 44 lean, (yeah?.. no sh#t 
lol. I have a matco determinator and for as little as I know how to use it, everything seams ok.. no knock problems, spark retard, map etc. Would a leak between the pump and the sending unit cause this. Doesn't seem to be affected by fuel level.Why does cycling the ignition power affect it? I'm at a loss. Any ideas on where to trouble shoot? Sorry for the long post but just want as much info out there as I can. Thanks,
Scott
lol. I have a matco determinator and for as little as I know how to use it, everything seams ok.. no knock problems, spark retard, map etc. Would a leak between the pump and the sending unit cause this. Doesn't seem to be affected by fuel level.Why does cycling the ignition power affect it? I'm at a loss. Any ideas on where to trouble shoot? Sorry for the long post but just want as much info out there as I can. Thanks,Scott
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