Smoking 1KZ-TE

[Brunei Prado]

Guys,

Help me a little here please.
I have a 1994 Landcruiser Prado with a 1 KZ-TE engine.
4 cyl 3000cc turbo.
Great car but 1 problem, it smokes more then I do and that means a lot.
I know this most probably means the injectors are dirty or need to be replaced but i would appriciate if you guys might know some other causes.
The fuel pump has been overhauled so that should be no problem.
I know the engine is full of sensors and maybe one of them is not working properly?
The ECU does not give any codes so I am stuck here.
I am not looking foreward to a injector replacement but if that is the solution, I should do that.

Thanks for any advise

Regards

Brunei Prado

 

[Entaran]

Start with the injectors. Get them cleaned and flow tested and if that doesnt' fix it, then start looking elsewhere



(PS, 100 posts).

 

[crushers]

Guys,

Help me a little here please.
I have a 1994 Landcruiser Prado with a 1 KZ-TE engine.
4 cyl 3000cc turbo.
Great car but 1 problem, it smokes more then I do and that means a lot.
I know this most probably means the injectors are dirty or need to be replaced but i would appriciate if you guys might know some other causes.
The fuel pump has been overhauled so that should be no problem.
I know the engine is full of sensors and maybe one of them is not working properly?
The ECU does not give any codes so I am stuck here.
I am not looking foreward to a injector replacement but if that is the solution, I should do that.

Thanks for any advise

Regards

Brunei Prado

i would run a can of seafoam cleaner through it (take off the filter, drain and fill with cleaner) and also look at trning down the fuel by the throttle sensor. this might have been adjusted at some time leading to excess fuel being dumped out.
this sia common problem with the 2LTE units...

 

[Brunei Prado]

i would run a can of seafoam cleaner through it (take off the filter, drain and fill with cleaner) and also look at trning down the fuel by the throttle sensor. this might have been adjusted at some time leading to excess fuel being dumped out.
this sia common problem with the 2LTE units...

Sorry Crusher but you got to help me a little more.
The filter is new so that's OK unless you mean I have to run the cleaner through the engine. By the way what is seafoam cleaner. This is Brunei so not everything is available.
second the throttle sensor, I checked the manual but can not find how to adjust the the fuel supply there. Maybe a hint.
Sorry for the questions but I do not want to f*&ck up the tuning of the engine (like I did with my crown).

Thanks

 

[crushers]

the filter can be new, you can reuse it. the idea is to run pure conditioner through the injectors.
seafoam is a high end conditioner.
on the side of the throttle body there is a sensor with 2 small star screws, loosen the screws and turn the sensor a LITTLE and test, then do it again...

if they are like the 2LTE then they will smoke...

 

[brownbear]

Seafoam is a like a diesel purge fluid. If you call the truck places or diesel shops they can sell you something like it.

Does this engine have return fuel to the tank when running. If so. YOu cannot do it like Wayne said.

I would remove the inlet fuel line and attach a line to it running to a bottle with a couple litres of purge in there. On the return line from the injectors that needs to also go to the bottle, Otherwise it gets pumped to the tank and you loose 90 percent of the effect.
You will need an inline filter on the inlet line to your injector pump otheriwse a lot of crap will go back into the injection pump.

I recently did this purge on a Diesel Mercedes and more crap came out of the injectors and pump then I care to think. Afterwards both the inline filter or main filter need to be replaced. They will be full of carbon crap.

If you just fill up the filter and run it most( on a return fuel injection pump) then you might not get much thru. I ran my engine 15 mins on purge. Till the 2 litres were gone. Then changed the filters.

see this website, not cruiser. But you can see how its beneficial to have the purge looping thru the injection pump. I made my own purge just like the picture. Plan to do the same to my BJ60

http://dieselgiant.com/injectorcleaning.htm

 

[Tapage]

BBear .. if my 2H havn't return line .. this kind of purge is posible . ?

 

[roscoFJ73]

Why not take the injectors out and take them to a shop and have the spray pattern examined??

 

[Brunei Prado]

Bear and Crusher,

I tried your method, I used a 1.5 liter plastic water bottle with diesel cleaner mixed with diesel fuel. Made two holes in the top and put the supply and return line in it.
Unfortunately I think I did not have the correct cleaner, they only sold the one you have to add to the fuel tank.
I will try and locate some other cleaner to repeat the same.
Thanks and I will keep you posted.

Regards
Brunei Prado

 

[brownbear]

on the return did much sediment come out? On my mercedes it was quite a bit.

 

[Brunei Prado]

No, not at all. That's why I think I used the wrong fluid.
Looks like it's going to be a difficult job to find any decent cleaner down here in Brunei. Going to Malaysia for holiday next week, might find it there.

 

[brownbear]

you did have a good recycle going? Where it flows back into the jug and the level slowly lowers?

If you get a diesel purge product, just run it straight with no diesel mixed in. I ran seafoam straight. Lots of sh_t came out.

 

[Brunei Prado]

Well guys,

Sorry for the late reaction but the job is busy and no job, no money so had to do it.
I did do the suggestions mentioned here and it came out zero. Now I do not trust the garages here very much so next visit will be the official Toyota agent.
Today I checked for prices of new injectors and one of the mechanics told me the turbo is gone. Now that is an expensive thing so maybe some opinions from you guys could ease my mind.
As you can see in the picture, at the intake it is leaking and it is all black. This was for the mechanic the sign the turbo is leaking oil. Now the black stuff does not smell like oil and the oil level is at full for more than 2 month allready so I doubt it is oil. Now the intake air should not be black at all, so what can this be?
Some more info, the air filter and fuel filter are all clean. The car is used by my wife now and she drives like an old lady (don't let her hear this) so no excessive rpm (automatic gearbox).
Any suggestions before the Toyota agents comes up with costly repairs.

Thanks guys.

 

[roscoFJ73]

Sure looks like oil.
The amount you have lost would not affect the oil level.
It probably doesnt smell like oil because it is burnt.

 

[Tapage]

Mmmm did you " feel " the play in the shaft of the turbo . ?

 

[crushers]

it could be oil from the turbo or it could be severe blowby the rings and the EGR is pumping this intot he intake before the turbo. pull off the tube from the airbox to the turbo and see if there is oil before the turbo...

 

[Brunei Prado]

Well,

Been to the Toyota garage. They changed some gaskets and changed the oil.
Will see what happens, it seems the car smokes less.
Have a christmas drive ahead of me to central Borneo so will see what the car does. (only black top roads)
Once back I will check the turbo for oil leakage.

Cheers

 

[Brunei Prado]

Well the holidays are over so back to business again.
I took off the inlet hose but could not reach the turbo fan due to a bend in the turbo housing.
I did notice some oil deposit inside the intake bend and it appears to come from the ventilation hose, which is connected to the valve cover. (see pictures)

Now this seems ok for me but I could not find the crank ventilation hose going into the valve cover. Maybe this engine does not have that?

I also noticed some black deposit (more than normal I think) around the EGR valve, could this valve be the cause of the black smoke?

Cheers

 

[crushers]

that is your crank case vent you are pointing to ...

it is normal to have a small deposit of oil on the intake runner...

 

[Brunei Prado]

Wayne,

This pipe (hose) runs from the valve cover directly to the turbo intake. No idea where the crank vent hose is.
I will check better this weekend.