Thread: white smoke on start up

Our Isuzu FVR 950 has less than 90000 K and does it sometimes As mentioned you could install a block heater quiet common on standby generators or put a resistant grid in the inlet system just don`t use ether The block heater will improve your heater first up wich probably would be welcome

I just prefer to be antisocial

Originally Posted by Judo

Ahh I didn't realise that with the fuel screw. I'll add that to my lesson for today.

The rest all makes sense. With that in mind and the properties of diesel in cold weather (and winter blends), do you think sub zero weather will make more white smoke at start-up? I.E. Colder the weather, the worse the combustion, more unburnt diesel and more white smoke....?

I wouldn't expect alpine blend fuel to make much difference to the white smoke issue. Its purpose is to overcome the issue of "wax" formation in diesel fuel at low temperature.

It sounds reasonable that the colder the ambient temp, the worse the combustion.

As well as the other suggestions, such as block heaters, you could fit an exhaust brake. Some Isuzu trucks with the 4BD1T engine had these and besides the obvious use (and BTW very useful off road), they were also used to get the engine up to operating temp sooner in cold conditions.

It is not good for a diesel to run too cool, nor is it economical, and performance suffers as well.

Make sure the thermostat works too, or the white smoke will continue for longer.

Originally Posted by isuzutoo-eh

Make sure the thermostat works too, or the white smoke will continue for longer.

Yep, that reminds me, mine isn't as bad as it used to be a few years ago, and come to think of it I did replace the thermostat a while back. Mine used at run at about 1/4 on the temp gauge at most, now closer to 1/2 -maybe that helped????

Well living in sth tas mine white smokes every winters morning but not at summer its just cold and that how it is dont worry about it

On some later models [Sitec} Isuzu have a solenoid wich advances the timing
for 21 seconds on startup to address the white smoke. More electronic crap!