1HZ still a problem.....Its a Mystery

Just when I thought the problem of the smoky motor was cured - apparently not so.

Finally got down to Bunbury to pick the truck up after its compression checks, dyno and injector service and seemed OK with adeqaute power BUT!!!!!!!!!!!!!

Next morning on start up and driving at low revs and between gear changes, there is the black pall following faithfully. Mechanics claim its ok on the Dyno, plenty of power and not smoking and now have new injector nozzles etc and fuel has been wound back a bit.

Much scratching of heads and suggestions to do this and that but needless to say, I'm now $1K poorer and no closer to a solution and I suppose this is what ticks me off most about service organisations in the modern day.

I suppose that the reason I was interested in the first place to throw it on the tip and put a new motor in because missed diadnostics at the owners expense can soon cost an arm and a leg with no positive result.

Roachie would know this with his eternal overheating problem which finally has driven him to a complete vehicle change. The dollars can soon evaporate without any success leaving you a whole lot poorer with no progress.

So if smoke indicates poor combustion -which equates to diesel supply, compression and air - and I have checked the first two, then perhaps its a dodgy filter tho visually it looks OK and only 2K old.

Could it still be the fuel pump??? tho that was overhauled 25K's ago but perhaps a bit sus about the mob who did it????????

And yes it has been heating up a bit under heavy load but the problems are evident from start up from cold through to operating temps??????

Any one got any bright ideas?????????????

John G