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testing fuel pressure with crank, no start condition

Discussion in '2nd Gen Tundras (2007-2013)' started by Jollyshame, Jul 23, 2024.

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Jul 23, 2024 at 9:57 PM

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Jollyshame [OP] New Member

Joined:

Jul 23, 2024

Member:

#120273

Messages:

1

Gender:

Male

Vehicle:

2012, v8, 5.7L

Hi,
I have a 2012 5.7L. It cranks, but won't start. I hooked up a fuel pressure tester. When I cranked the ignition I get 42psi, but when I stopped cranking it drops 10 psi. Then stays at that pressure for 5 minutes.
I don't know how to interpret this data? Is the fuel pump good or bad? All the procedures I've come across is testing while vehicle is running. Should have 42-44psi, drops some while running, should hold pressure for 5minutes after engine shut off.

Jollyshame, Jul 23, 2024

#1

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