Vauxhall Combo won't go

[ukminch]

I had a nasty feeling it might be............... Trouble is thats always pot luck, not had good experiences with garages recently!

[Tom D]

White smoke is un burnt fuel, sounds like an injector has packed up, probably caused by debris from the pump failure. Be careful turning it too much, you can hydraulic lock it if enough fuel gets into the cylinder...

[geoff]

Thats right Tom,thats what made me think the timing was out,(retarded),has the same white smoke.

[garth mc garth]

Crank or camshaft speed sensor? Picks up the wrong speed and injects fuel at the wrong time or amount??

[Tyz05]

Could have an injector failed,if it's common rail system it won't hold enough pressure to make the rest work. Garage job either way.

[agg221]

The thing that made me think it's less likely to be an injector is that it now won't run. If you crank it enough they'll normally fire on three, even when the injector is dodgy. Not advisable to do it for too long as it can burn out the piston crown, which is another possibility, although again I'd expect it to start but just run really badly.

 

Alec

[Tyz05]

If one injector fails and leaks fuel pressure on a common rail system the rest of the injectors won't receive enough pressure to atomise the fuel. Hence the White smoke and now it not starting. Assuming it is a common rail system, im not familiar with the vehicle in question.

[agg221]

Not had problems with a common rail system (yet) - all my experience is drawn from older diesels. Current two are common rail though so I now have some new symptoms to remember.

 

Alec

[Tyz05]

If you have access to known good injectors aswell swap them and see what happens,might be worth a try before taking to a garage. Keep us posted with your results,

[geoff]

Not had problems with a common rail system (yet) - all my experience is drawn from older diesels. Current two are common rail though so I now have some new symptoms to remember.

 

Alec

 

We are showing our age on this thread Alec.