[oldeere]

Hi ...new here so hi and thanks,I have a 1997 Ford ranger 2.3 with 5 speed stick...I have a misfire in # 4 po304 and a po171 lean...I have new plugs,new wires..and new coil & injector..have checked fuel pressure ...key on it has 10 lbs...start and run 30 to 35 lbs..on plug regulator..40 lbs....any input is welcome....again thanks

[phantom]

Have you done a compression test ?

[oldeere]

Originally Posted by phantom

Have you done a compression test ?

Yes...sorry! forgot to include....170 to 175 ..on all 4 and no vacuum leaks that I can find....

[oldeere]

Originally Posted by oldeere

Hi ...new here so hi and thanks,I have a 1997 Ford ranger 2.3 with 5 speed stick...I have a misfire in # 4 po304 and a po171 lean...I have new plugs,new wires..and new coil & injector..have checked fuel pressure ...key on it has 10 lbs...start and run 30 to 35 lbs..on plug regulator..40 lbs....any input is welcome....again thanks

problem fixed...switched out injector # 2 ..with one of the two, I toke out of #3 # 4...the misfire moved to #2 from #4 misfire....then put in two rebuild injectors in #1 and #2....had put new ones in #3 and #4...no misfires or running lean codes.........

I don't known why..I was getting a misfire on #4....and till I switch out #2...then the misfire moved..#2

[Poppy]

You had a bad injector in #4, when you moved it to #2, the missfire moved to #2, so when you put in a rebuilt one there, everything is fixed.

Thanks for posting the solution.

[oldeere]

Originally Posted by Poppy

You had a bad injector in #4, when you moved it to #2, the missfire moved to #2, so when you put in a rebuilt one there, everything is fixed. Thanks for posting the solution.

It started out with a ..misfire on #4...switched.. plug,plug wire,coil,new injector..still had misfire..on #4..cleaned maf sensor ,checked for vacuum leak.....then I toke a dowel rod,checked the sound of each injector..and #2 had defference , in sound from the others,...so I changed..#2..with one I had removed ..from #4 earlier....and these was the only time...the code reader showed a misfire on #2...switched out ,#1 & #2..with rebuild injectors
.....and its running great....so I guest if you have to change one injector..change them..all save's Big pain in the A$$