Hi Scotty I have question my 2004 ford ranger 3.0 v6 sometimes maybe once or twice a months misfires…

LoyalOwner

Hi Scotty
I have question my 2004 ford ranger 3.0 v6 sometimes maybe once or twice a months misfires and when i hook up obd2 scanner it shows p0304 which is cylinder 4 i tried new oem motorcraft spark plugs and spark plugs wire i think that didnt help now i tried lucas injector cleaner to maybe clean the injectors
please can you explains what are the symptomes of misfire on ford ranger
thank you

Comments (4)
No. 1-4
Believe231
Believe231

You bet, good luck!

LoyalOwner
LoyalOwner

thanks

LoyalOwner
LoyalOwner

let me see if the lucas would help then if not i would try swapping injectors and then compression test and coils

Believe231
Believe231

IF spark plugs and wires haven't helped, then could try swapping the #4 fuel injector to another cylinder and see if the misfire moves. Otherwise next steps are to check compression and the wiring to the #4 injector. Then the coil assembly.