p1121

missfire unload

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Aug 20, 2024
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Good day new to this site, looking for some help here, i have a 03 with that p1211 code the truck runs great even when it throws the code, so with 460 000 kms i figure it can't to change some things anyway, so after i put 120 psi into each head and could not hear anything also looked for bubbles in the fuel bowl nothing, so i changed the hpop and the lines to the heads from cnc fad. ipc, ipr from Ford, done injector o rings two years ago, what am i missing,
ipc at idle 10 to 10.8, fuel pressure 58 to 65 steady.
going to inspect the screen in the hpop res next.
anything else i should check before taking the valve covers.
 

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