Have a 1992 F150 with an inline six. It is missing on cylinders 2/4/6. We have checked the fuel filter it is fine. Have checked spark plugs and they are about a month old with no cracks or carbon trails. Plug wires are also a month old and shocked the hell out of us when we tested them.

My neighbor had a compression tester and its getting about 130-150 compression. What else should we try?

 

Did you inspect and/or replace the distributor cap and rotor?

 

New Distributor cap and rotor when we did the rest of the tune up. Just rechecked the firing order. Just put in 6 new injectors about an hour ago and it is still missing on 2, 4 and 6.

The firing order is 1-5-3-6-2-4 so its missing the last 3 of the sequence.

 

We switched the wires between 1 and 2 fuel injectors and the #2 injector started working so it isn't getting power. So the fuel injectors on cylinders 2-4-6 aren't getting any power. Can't figure out why though. The ignition module passed the test 3 times. Thought about testing the crank sensor but cannot find it anywhere and the Chilton book only tells where to find it on a V8

 

You may be able to find it in a Haynes Manual...? I'd go to the local parts store and see if one has the wrapper off of it and have a look.