Hi all got a problem with my xr4x4 2.9 that I've had for 23 year, starts up ok then she's decided to not fire on cylinders 3,5,6. Changed coil leads plugs dizzy rotor, still no change, any help thanks

 

Have a look at the wiring loom through the Vee to the injectors, they can get brittle and break.

 

had one of these a few years back and had what seem to be a miss fire , had a test done by a roll/road guy and he equipment showed number 5 inlet leaking . when I took it apart the gasket was gone on number 5 fixed it and miss fire gone .