I have no Schrader valve on my truck, where do I hook up have to test fuel pressure, I have rented a kit from Orielly's.
Nov 23, 2024 at 4:58 AM
2014 Chevrolet Silverado Fuel Pressure Test
GLEN MESSER
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Without the valve you need to remove the fuel line at the fuel rail and T into that with the gauge. You will need the CH-47831 tool to release the connection. Then connect up the scan tool or turn the key on and off multiple times so that you can run the pressure tests on the pump, you want to see a key on engine off pressure no lower than 48 psi but ideally it should be between 75-85 psi. Then when you turn off the key the pressure should drop no faster than 5 psi in a minute.
FYI, your truck may have been part of the recall GM had on them. I would verify that was done.
https://static.nhtsa.gov/odi/tsbs/2014/SB-10054993-8946.pdf
FYI, your truck may have been part of the recall GM had on them. I would verify that was done.
https://static.nhtsa.gov/odi/tsbs/2014/SB-10054993-8946.pdf
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Nov 23, 2024 at 6:04 AM
Suggested Repair
With no Schrader valve, disconnect the fuel line at the fuel rail using tool CH-47831 and tee the gauge into that line. Prime with a scan tool or by cycling the key, and expect key-on pressure ideally 75-85 psi and no lower than 48 psi, with no more than a 5 psi drop in one minute after key-off. Also verify whether the GM fuel-system recall was completed.
Conversation Summary
The owner of a 2014 Chevrolet Silverado asked where to connect a rented fuel-pressure gauge because the truck has no Schrader valve. The expert advised releasing the fuel-rail line with tool CH-47831 and teeing the gauge into that connection, then checking key-on pressure of ideally 75-85 psi (no lower than 48) and a hold of no more than a 5 psi drop per minute. The expert also suggested confirming a related GM recall was done.