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thats going to be injector harness or terminations.
if its just not firing them look for broken wiring
if its flooding look for a short on the wiring.
you can confirm which ones are getting firing signal by using a 12v bicolour led, cutting one leg short and soldering on a suitable resistor then just poking the legs down the plug.
Just thought I'd give you guys a update. Had nothing to do this evening so took out my can of carb cleaner, my syringe and proceeded to clean the spare set of injectors I had lying around. Pulsed each one a few times with a 9v battery while I had some carb cleaner in there. Installed them on the three dodgy cylinders and BEHOLD! The misfire was gone. Well it sounds pretty damn good I think. Bit of hesitation, but revs up very nicely and sounds almost like a v8 should sound :-) Gonna see how things go tomorrow after I get back from work. I should have thought of doing the fuel system as the landi was standing for more than a year. I also just took a bottle of valve ease, disconnected the vacuum pipe from the fuel pressure regulator and sucked it all up in there, slowly. I forgot to open the damn garage door when all this was going on. I couldn't see shyte in front off me. And the wife's sort of ****ed because the washing that she just washed, now smells like fumes and other nasties.
:p:p:p:p