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Discussion Starter #1

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Discussion Starter #2
Two test kits and the same outcome. Zero pressure showing on both, what am I doing wrong? Truck starts and runs, sprays when I open up the fuel line and will hiss when fuel cap is loosened
 

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Discussion Starter #4 (Edited)
Had the guage screwed on to the T fitting too tight. Key on truck off about 41psi while pump runs then 39 or so when pump off. Seems like it builds pressure after a few minutes when everything is shut down?

Unplugged FPR vacuum line and psi jumped. When it's running and I rev it up it'll go just above 40psi briefly

Everything sound normal??
 

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It's a 3 bar regulator, with the vacuum disconnected (or wide open throttle) it will read about 43 psi.

With the engine running and making proper vacuum it will be around 34 psi (off the top of my head number).

Hard to see the numbers in your pictures, though I think it seems normal.
 
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