'90 s10 wont start unless primed, already replaced fuel pump

[mme43]

it was running fine, died one morning. theres a good spark. filter's fine, idle air control valve seems fine. i repleaced the fuel pump. starts and runs when i prime with ether but idles out if left alone.

[droptop94]

if your getting fuel. try to open the butterfly then start it if this works with out primeing it it could be your tps.

[DrtyChvy]

Hey hey,.. ok,. now this may sound a bit funky,. but you can throw a pony fuel pump up front and put it on a toggle switch. Then just turn the switch on for a few seconds and start errr up. This will prime your fuel line for ya. Then turn the switch off for the pony pump. Did this on my 89 jimmy,.. its quick, its easy

[nova racer]

check for fuel leaks. when you have a cold start problem like that. more than likely there is a fule leak where fuel pressure drops there in no fuel for the injector to squirt.

[michelq]

did you try to replace fuel pump prime relay