Hey guys i have brought a 2001 Holden Monterey with the 4JX1 engine it is running rough at idle and there is lots of white smoke out the exhaust
it has a miss at idle and sometimes when driving much worse when cold
so far i have
done a complete oil change with 5-40 synthectic oil and replaced both oil filters and the fuel filter
done a pressure test on the cooling system and there is no leaks there and it is not mixing any diesel or oil or coolant
so no coolant in oil etc
i have cleaned the map sensor port and even replaced the map sensor with a known working one
cleaned the oil rail pressure control valve
i have a tech2 and with the engine off the Oil rai pressure sensor reads 0.02 and reads 6.0 when idle but does jump around when driving but always without 1.5 or so of the desired reading
also with the engine cold the tempreture sensors read within 5c of each other
the map sensor reads about 100 kpa at idle and goes up to just under 200 when revving the engine
i have replace the oil pickup o-rings in the sump
i have done a balance test with the tech2 and no matter what injector i disable it runs worse but no differance between injectors
at this stage i have the injectors out and am going to pull them apart and inspect them as we suspect that maybe all 4 are faulty
here is a video of the car running when cold however it is normally much worse than this
does anyone here have any other ideas of what could be wrong?
any help would be greatly
Thanks
Jonathon