So I have traced it to the cyclinder that is not firing, ive got power from the ptu to the coilpack connector, ive tryed two differrent coilpacks and has new plugs installed. Any ideas??
Are you sure you have no spark? Get a logic probe or DMM and follow the diagnostic procedure outlined in the FSM. Is it possible that you have spark and that the injector or low compression is the culprit?
Oh Dear! This sounds so similar to my continuing nightmare. I'm still no further toward a satisfactory result, after 5 weeks and new Sparkplugs, new Coilpacks, new Injectors(every day brings a new problem)and now my Power Steering Pump Belt refuses to be adjusted(it's at the very bottom of the curved slot on the Locknut and cannot be moved in the opposite direction). I've grown to like Bus travel(and I have sore feet). ****ed Z32's!!!
Compression test before you go pulling your hair out trying to diagnose external issues. What cylinder is your culprit? 1. Mark your CAS and unbolt it. 2. Pull all coilpack plugs. Remove suspect cylinder coilpack, plug it back in to harness, fit a known working spark plug to the end and rest it on the plenum, ensuring the threaded end of the spark plug is on a grounded surface. 3. Ignition on, CAS plugged in, rotate CAS. From this, you should be able to hear your injectors tick and the coilpack operating (spark visible on the spark plug). At least you've proved spark and injector function (though blocked injector could still be a possibility).
It was a double entendre, praising east coast z for the "champion" advise. Stop trying to cut my grass with a blunt instrument. :rofl:
Cylinder not firing on Fuel injected vehicles does not always mean NO SPARK... As suggested check the Injector connector if the spark plug test proves there is a spark. Because of fuel injection there can be spark to all cycindrs but no fuel in one or more. In the Old carburetor days if a cylinder was not firing it must only be either No spark or No compression as fuel is always available to all cylinders. No so in fuel injected cars. MichaelZ
