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mike in pdx

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mike in pdx New Member

mike in pdx

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Trying to perform fuel pressure check on 97 Yukon 5.7. Is there a special fitting required to tap the Schrader valve on the fuel rail? Not sure my cheapo Harbor Fright test rig has what I need.

mike in pdx New Member

mike in pdx

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On 11/10/2017 at 12:02 PM, mike in pdx said:

Trying to perform fuel pressure check on 97 Yukon 5.7. Is there a special fitting required to tap the Schrader valve on the fuel rail? Not sure my cheapo Harbor Fright test rig has what I need.

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no HD Enthusiast

no HD

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Make sure the hose on your HF guage has something in the center to push in the core on the Schrader valve. If you get no reading you could temporarily remove the core and hook up the hose to get a reading. I think most gm fuel rails on those years trucks use the standard valve. I don't remember having to use any special adapters or anything to ck fuel pressure.

mike in pdx New Member

mike in pdx

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Thanks all for replies. Turns out it was my cheapie test unit. Got a better kit and it had the correct fitting. Time to change the pump...  -_- 

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