Is there any way to test fuel pressure and flow without a gauge?

1995 GMC C3500
100,000 MILES
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MILO
  • MEMBER
  • 5 POSTS
I'm just trying to narrow the possibilities before replacing parts. truck runs but won't idle. acts like it's starved for gas. i installed throttle body rebuild kit including fuel pressure reg. if i just pour in a capful of gas the truck runs and idles great til that gas is gone. then it tries to run but can't. I'm wondering if there isn't enough pressure
Mar 16, 2012 at 3:35 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
You need a gauge to check it, but sometime you can take the line off and try to stop the flow with your finger, if it is difficult, pump has pressure.
Mar 16, 2012 at 3:38 AM
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