You checked TPS???

Measuring fuel pressure only at idle or as you rev it up also?

Measuring fuel pressure only at idle or as you rev it up also?

 

it will idle on its own at it normal pressure but wont rev and will rev with excess pressure proberly rises by 10 to 20 psi when reving i think

 

havent checked the tps cuz a month ago it wa running happily in the red t18 i had the ecu was in the engine bay so everything on the wiring side is the same a when it was in the red one nothing was disconected the only things that have changed is the fuel system (tank and standard lines of the white one there was a boost presure kill switch thing witch i left in the over engine bay ......

mayb e just not enough flow? What size is the fuel main fuel line?

everything is original t18 fuel lines so were the ones in the red t18 and it was running in there with all standard fuel lines.

 

 

also before i replace the regulator i could prime the the fuel system manualy then disconect the fuel pumps power and it would start happily without having to crimp the return line. when the fuel pump is running it wouldnt start without the return line crimped and it would idle and rev better then with the adjustable regulator at 35-40psi and run with out the pump running for over 5 minutes maybe even 10 and with the motor off and the fuel pump not running there is a bit of pressure in the tank enough to push all the fuel in the return line back towrds the fuel rail when disconected from the regulater with enough force to jet it every were and then once the line is clear of fuel it will hiss and spulter untill the tank isnt under pressure..........................................