EFI running rough while driving

[MADAZZ]

and no sparks in the dark

[Robo]

Have you done a compression test.
where are you.
maybe a very dirty injector

[NP99]

Have you done a compression test.
where are you.
maybe a very dirty injector

Some injector cleaner and 98 RON fuel???? Injectors don't last forever, so may need replacing/cleaning at a shop.

[MADAZZ]

injectors only cleaned Friday ,compresion test done sunday only 1 cylinder was a bit off the others but not too bad im in Bunbury wa I haven't given it to a mechanic yet ,I think its time to, have tried to save some $$ I think I have done well for a car detailer

[Parksy]

Vacuum leaks aren't the easiest things to find, even when you do use flammable liquids to try and find leaks. When I bought my patrol, it had lots of vacuum leaks, and every hose I replaced improved the performance slightly. But the biggest leak I had was either the manifold to head gasket or the gasket between the manifold halves. Replaced both and the engine ran like new. Mind you I installed new injectors, new ignition components and a new fuel pump. All of these were suffering in some way and caused an improvement when replaced.
Check your fuel rail pressure, should be 40 psi and rise up pretty quickly.

[Parksy]

Also take the distributor cap and rotor off and remove the plate underneath. There will be a disk with hundreds of little notches. There is an optical pickup sensor which reads these notches, any water or dirt that has managed to get in will need cleaning.

[MADAZZ]

checked dizzy its clean fuel pump is a bit sad when I cleaned it sock on the end was sucked in and covered in crap ,manifold to head not sure of

[Parksy]

If you can buy a cheap inline gauge, and install it after the fuel filter, that will give you an indication on what your pumps health is like. Mine put out 32 psi and rose to this very slowly. When I replaced it, as soon as i turned the key it jumped to 40 psi instantly. Made a big improvement to the performance also.

[MADAZZ]

just put a new fuel pump in to squash that problem and still misfiring but a lot more responsive when I give it gas, it is going to a mechanic in the morning hope he finds something simple I missed

[MADAZZ]

owning a 4WD is like owning a boat , B ring O ut A nother T housand