how do you determine if the fuel injectors are working like they should

[greaseyfingers]

ok i traded my bronco II that had a shit brick of a 2.8 ford a 1989 ford ranger that ran ruff bad like what your sayin yours is so i checked everything spark gas everything i even compresion tested it it was all good so i figured i would start it up let it run an start pulling injetor wires i pulled the first one ran the same like shit so i pulled another one an it died so i pulled the injector an changed it an it turned out to be two injectors so i changed them an it fired right up no problem havent had a problem ever since you can pick up injectors at any junk yard that has rangers

If I find a bad injector by the method you described.

Can the bad injector be removed without removing the fuel rail, or anything else?

Are the injectors threaded into the intake, or how are they held in place?

How long does it take, approximately, to remove and install another injector, if one needs to be replaced?

 

[piotrsko]

Pretty sure you need to pull the fuel rail. Took me and my son 1 rainy afternoon to do all 6, but we went with all new. you'd want a set of seal o-rings handy.

Pull the intake, be careful with the wire harnesses, not so bad.