running little rough

[slimpickinzent]

ok guys 2001 ram 1500 360. cranks hard in the am, idles fine in park or neutral. when its in gear at a stop or under load it stumbles. feels like its not a spark miss and have taken off plug wires one by one and zero difference. no cel codes as far as the light goes.

fuel pressure is 40 ish when key on not running. once cranked pressure goes to 45 and bounces between 45-47 psi. when i shut the truck off it drops below 30psi within a minute. thinking leaky injector or fpr?


ive heard that these trucks like thier voltage to be on point and can cause these types of issues if not tip top. my voltage reads 13.60 to 13.80 when running...re-did all my grounds and no difference.

EDIT pulled plugs and they were gapped out to .50...regapped at .40. also #8 plug was fouled. swapped wires around feels better but problem still there....wondering could leaky injector cause the fouling?

 

[slimpickinzent]

somewhat solved. new pcv valve and a junkyard injector later she purrs like a kitten. fuel pressure still drops below 30 rather fast when cutting off the engine so imma get some new injectors and ive already got a new fuel pump.

 

[ADudeOnSkis]

#8 plug was fouled you say? Compression test time.