1997 GMC K1500 Z71 fuel pressure

[CrazyJesster]

hell0 i have a 1997 gmc z71 5.7 4l60e trans manual shift on the fly transfercase. ok its rolled to 98,000 miles an the wonderful trouble of fuel pumps yay. now im pretty sure im right but i like to make sure. i replaced the fuel pump and it was falling on its nose horribly. then finaly stopped running now i know im getting gas an the fuel pump does come on. but im watin for my buddy to bring his fuel pressure checker. to check the fuel pressure. its jsut turning over an not starting the analizer said im getting not even enough pressure for the injectors to pulseate. its like 65 + pounds for it all to work properly. im sure this is it so that menas the new fuel isnt producin enough pressure for the vehicle to start i know its not the cam sensor i tested all of that stuff . so looks like ive got a new bad fuel pump the filter is on correctly i changed that also. or could this be something causin the injectors to not pulseate. but the analizer said insufucent fuel pressure

[Old Dave]

Just went through this on my 97 GMC Suburban and with a new pump it now starts fine everytime. Mine always started but sometimes you would have to crank for 4-5 min. My pressure was 53 Lbs. at the fuel rail and with the new pump it's 58 Lbs. The Mitchell service manual says the specs. are 55-61 lbs. with the key on not running. The new one is considerably louder than the OEM pump but as long as it keeps running I don't care. Good luck...