what pressure reading should there be on a 1989 f150 high pressure fuel pump.
What direct pressure readings should i be getting on a high pressure fuel pump (rail mounted)? I am reading 17 psi.
What should the pressure reading be when hooked up to the schrader valve on the fuel line just behing the engine up close to the firewall? I read 10 psi
Are these within spec's for1989 F150 4.9 L EFI high pressure fuel pump?.
You should have 45-60 psi at the rail with engine running.
yes you are withen spec,s,if you are getting to much or not enought fuel,put a fuel regulator on it,you will be able to adjust the fuel pressure.
that sounds kinda low. i have an 05 f150 and my fuel rail pressure is at 40psi. but mine is the 5.4 triton. but that dose seem low.
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