I have a 2000 jackaroo with a isuzu 3.0 lt turbo diesel. i recently had the injectors replaced & now it is blowing heaps of white smoke. Do the injectors go through a cooling gallery that would allow coolant into the combustion chamber if an 'o'-ring was pinched as they were installing the injectors? or is it the timing?

white smoke from the exhaust.. sounds like you have blown a head or intake gasket,, you have antifreeze/coolant getting into the fuel mixture.. CHECK your oil for water/coolant/antifreeze contamination...These are the symptoms that your describe.. if you have oil contamination, DO NOT crank the engine again UNTIL AFTER you get it repaired...

please mark as helpful..thanks

if diesel and turbo , check turbo operation of for holes in the intercooler
if turbo or naturally aspirated check/ replace injector tips as black smoke indicators squirting and not atomizing
if petrol check for excessive fuel pressure, faulty injectors , leaking injector seal
regardless of petrol or diesel --black smoke indicates incorrect air / fuel ratio ( too much fuel) so injectors, intercooler, bad turbo or blocked air cleaner are all candidates for the fault

thats a big fuso diesel truck

if it starts up ok glow plugs and engine is ok
if it dies under load or blows heaps of smoke
look in to these possibles

if turbo-ed faulty turbo or internal crack
injectors
dirty air filter
fuel pump /filter
cylinder compression

faulty injectors
have the injectors fitted with new tips and recalibrated
if it has a turbo , have it reconditioned

what ISUZU what body? what year, and what country.
we cant guess all that?????? Injection system types vary by ALL THAT.
that can be lots of things
but the turbo , stops the smoke.. (adds air during times when old non turbo diesels smoked normally)
it could be a bad turbo or a leaking injectors
why not get a mech to service the car.? guessing will not work.

turbo seal is blown allowing oil into air intake charge-white/blue smoke=oil- black smoke=rich fuel mix-replace turbo-cheers Denny

injector o-rings are shot allowing oil to blow by

The copper washers on the bottom of the injectors can give this fault if they are not renewed when the injectors are replaced .

If you have changed these allready and made sure you pulled them down exactly as the manual says in 3 stages then you may have a bad injector - see your Isuzu dealer .

Have you had the injector recall check carried out? There is a problem with these injectors and this produces the symptoms you are describing. I suggest that you contact Isuzu direct for help. They have been very helpful in the case of my trooper

With regards to the above problem, I have just recently experienced the exact same thing with a 98 Mazda Bravo b2500 (this is a diesel).The symptoms were after driving over some corrugated dirt roads the vehicle would not rev over 2000 rpm and at that point would blow heaps of white smoke and misfire, but would idle beautifully and rev smoothly up to the 2000 rpm. Also noticed when vehicle was cold it would drive good for about 5-10 mins then symptoms would start again.

Fuel filters were changed, sediment trap cleaned,different fuel tried and checked all lines and system for air entry, problem still persisted. While checking injector pump lift pump pressure I noticed that the pressure would drop right off at the 2000 rpm, maybe a lift pump problem?? After consulting the workshop manual I found there is a small stainless steel thimble filter under the injector pump fuel line input union bolt, held in place with a small spring. Pulled this out to have a look and it was full of crud, cleaned it all up and put back together and have a guess what......goes like a brand new truck!!

Cheers