White smoke from exhaust

H 2 O

Yep H20 (water) will certainly cause this problem. either water in fuel, wet air filter or head gasket.
However excess fuel due to a state of non-combustion will also give the same appearance. reasons vary from lack of compression through to injection timing out that far, ignition fails to occur. To many other possibilities to mention.

White smoke would usually indicate oil rather that fuel. Fuel will burn black.

I thought they blow white smoke when they hole a piston.

the smell will give an indication off whats burning, white is usually oil. col

I saw a 4.2 litre Nissan GU blow a heap of white smoke - which was cured once the tiny mesh filter within the fuel pump was cleaned .... it was starving for fuel at higher revs ....... I don't think that applies to the 3 litres though (more serious I think)

engines been cooked. white smoke is half burnt diesel. klack of compression cause rings are stuck together

Dont know about Nissans but Scania buses blow a heap of stinky white smoke when they blow a turbo.
Lots of fun cos if you dont turn them off quick enuf they will run on the oil until it runs out and then they seize

Had a MQ diesel that used to blow white smoke whnever the fuel filter needed changing. That's how I knew when to change it.
Geoff

White smoke is unburnt fuel,,,either by lack of compression (Most common on 3 litre patrols) or bad glow plugs not allowing ignition (most common on 2h landcruisers)....also an air filter restriction can do it...
Black smoke is excessive burnt fuel...
Blue smoke is oil burning
Andrew 95 landcruiser 80 t/d

White smoke has something to do with Pope I think. When white smoke comes out of the exhaust pipe it means the cardinals have interfered with another alter boy. I'm not religious, and I could be wrong, however. Black smoke means something else again.

OK, most guessed wrong (especially those predicting another 3L holed piston) but the ones who picked a blown turbo were on the money!!! This vehicle is owned by a fellow club member of WC4X4 and its now back on the road.

Cheers

Captain

white smoke = undefuellng Ive seen it when
- starting with stuffed glowplugs
- Trying to start and run a ute thats out of fuel
- running a ute thats got completely blocked fuel filter

mine was blowing white, shortly after a new fuel pump was needed. Acombination of lack of fuel (blockage) and water.
Cheers Paul

last time I had white smoke it was my head gasket blown, a VERY expensive day................

Sorry that should have read HEAD not gasket, still a memorable day though LOL..............

G'day Alan
Theres some wrong info in some replys you have recieved
The rules for smoke are

Blue Smoke = Oil burning
Black Smoke = Excess Fuel
White Smoke = Cold smoke / or incomplete combustion
most commonly seen on start up when glow plugs ( in older style engines ) are not working properly
BUT in this case could be any number of things
in particular cracked head ; blown head gasket ; or the blown piston issue
but anyone who says they are certain of cause without seeing the vechile in question is full of ****
Garry