Vehicle & Technical > Discovery

smokey puffs

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muddyjames:
When I start the disco even with pre heaters (now I have them working again) the disco gives a short puff of white smoke for the first 30 seconds or so. This is every time I start even from warm.

Also when I sit at a roundabout etc for 30seconds or more then boot it to pull away I leave a small cloud of white smoke again. Doesnt smoke whilst going along except when it is doing 300rpm in 3rd (auto box) it gives a very small amount of black smoke.

Is there anything to be worried about or is it the signs of a fuel pump tweek as the engine used to be a police one?

Les Henson:
White smoke is unburnt fuel (you'll easily be able to smell it).
This could be a timing problem (retarded), or injector/injector pump problem.

Could also be steam, are you losing any water?

Les.

muddyjames:
Im not loosing much water. Only a tiny amount over a long time.

When starting it sounds like it is on 3 cylinders and it burbles along then it all fires up properly. Could be a glow plug gone I guess?

If it is injector that doesnt sound good nor does timing.

muddydisco:
Check the head gasket they are prone for blowing out on no 4 cylinder at the rear

muddyjames:
there is no oily goo in the oil top up cap or in the water though. how else could i test 4 cylinder?

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