Jason Mcdonaldson

I’m getting the readings right now, I’ll get back to you guys right away. Would you like readings from it in the “on” position and run position. How long would you guys like for me to let it sit to see if the pressure bleeds off Mack

That’s exactly what I was thinking. I ordeeed a new ACDELCO pump to swap today. I hope I don’t have a vacuum leak xD. But I highly doubt it

Alright awesome the new fuel pump is coming today. Today when I was trying to start my truck to check the fuel pressure, the pump seemed to not be having it. It was misfiring and shut off over 8 times that I kept restarting it. It was low on gas but still has 50 miles left in it. I poured in a couple gallons of 91 from the tank from my ATV’s and she fired right up. I think it would have fired up regardless since it started and died so many times to prime the pump. When I turn the key into the ON position and back off multiple times, it still cannot start without constantly dying. I’m going to install the new fuel pump today and get right back to you guys. Sorry I didn’t respond yesterday, the pump had not been ordered yet thank you guys so much!

Ok awesome thank you asilverblazer. I’m going to do this tomorrow and get right back to you guys. Would you like me to rent another tester and leave it overnight to see if the pressure bleeds off? thank you

Hey guys. Thank you for taking your Time to read my post. I apologize for posting this in the wrong forum, I couldn’t find the correct one. i have a 2009 Chevy suburban 1500 with the 5.3L V8, and I’m having 2 problems with her. I’ll start with the first problem to bot bore you guys haha. The truck is cranking excessively and dies every time I cold start her. It cranks like crazy, barely starts, then dies again. Rinse and repeat 2 times and it’ll start. I run E-85 in her and the truck has 167,000 miles. I replaced the purge valve solenoid to no avail. Poured seafoam and didn’t fix it either. I tested the fuel pressure and here’s what I got. It hovers from 50- 58 PSI running, and when I turn it off and let it sit for a little it drops to about 42/43 psi. Does it have a vacuum leak or should I get a new fuel pump. When driving, the truck acts completely normal again. thank you guys so much!