Hello, I'm having Toyota land cruiser Prado 2lte lj78 having fuel consumption problem and producing black smoke and not having good pick. I'm feeling like timing control valve is not working properly.

did you bleed the system if air is there it wont start

Please check tips and manuals here. Manuals Schematics Comphotechtronics

http://www.haynes.com/print

http://www.chilton.cengage.com/

two very good REPAIR MANUALS

TOYOTAhelp sight some times you can get help from the mechanics....

it may be electrical,, bad ignition, hope this helps some

check your brakes, if they are dragging it will severely impact fuel economy.

Black smoke always indicates that there is problem with the air/fuel mixture. This would have an great impact on the fuel economy.The possible faulty parts can be MAP sensor or the TPS or the O2 sensor could be bad too. There are just too many things that it could be.

When was last trans fluid & filter change? Should be done every 30k or 3 years. I'd start there.

Your turbocharger is leaking oil from the crankcase into the intake manifold. If you continue to run the engine it will deplete the crankcase oil to a point that will cause catastrophic engine failure. That is a technical term for "BLOWN" engine.

cylinder head

i need onwer's manual of toyota prado 2005 3.4L

I've been resetting pajero's compasses but try to get to an area where you can do 360 degrees turns (empty car parks, ) press the reset button and make 2 complete 360 turns slowly and normally this should set the compass bearing.
Let us know how you get on. Cheers.