Thick smoke and different smell coming out of exhaust tail pipe.the turbocharger starts to have leakage.94 model surf.KZN 185.I have the injection pump and injectors,fuel pump cleaned and calibrated.Does anybody have an aspirin for my headache?

Charles, after searching the net., stuck injectors,faulty fuel pressure regulator or faulty ECU. Have a good Tech, check engine codes, diagnose and estimate repair. Check the attached links,instruction and guides, Good luck
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White smoke out of exhaust not what you think Club Lexus Forums
Es300 Smoking Bad And Gas Smell Help
http://www.automotiveforums.com/t967184-_93_lexus_es300_fuel_in_exhaust_runs_rough.html

Over fueling meaning black smoke? Was this occurring before you replaced the injectors?

Have you checked the air filter and intake for restriction;

If engine is turbocharged check for boost leakage, condition of turbo;

Check quality of fuel;

Check injection timing if mechanical pump, check valve timing and lash adjustment;

Check for excessive exhaust restrictions;

Check compression of all cylinders and Compare;

Start with the basics and work your way up to the more involved checks and tests...

CHECK DIESEL INJECTORS, SEE IF THE EXHAUST SMOKES OR SMELL RICH, LESSEN TO THE EXHAUST OR PUT YOUR HAND ON FRONT OF THE TAIL PIPE, SEE IF IT FEELS EVEN AND SMOOTH OR DO YOU FEEL IS MISSION, COULD BE A CLOGGED INJECTOR, BAD INJECTION PUMP, A BAD FUEL FILTER, LARK OF FUEL,

You very likely have coolant entering the cylinders of the engine, you need the head pulled off and checked for cracks and if ok the head machined flat and replaced

It's very simply to find out if the turbocharger is causing blue smoke from the exhaust vs a blown head gasket. So, remove the turbocharger's compressor inlet centre hose (from the aluminium side of the turbo). Then see if there's in plenty of oil coming out from the hose and from the turbo. I'm 100% convinced that the turbocharger is damaged in your case. You can remove also the exhaust pipe out from the turbocharger, and see if there's a lot of oil coming out.
Repair or replace bad turbocharger with a new one (or with a second hand in good condition one). Good Luck!

White smoke comes through the exhaust due to leak in turbocharger seal.It can be solved by replacing the turbocharger kit.

This is Usualy NORMAL as CONDENCATION Builds up Inside the EXHAUST System. Not to Worrie about this UNLESS it Has the DISTINCT ODOR of COOLANT

Check the fuel pressure regulator. It should have a vacuum line attached to it - disconnect the vacuum line and turn the ignition on - if fuel come out then that's your problem. DON"T do this while the engine is hot or you could start a fire!

sounds like you may have had a head gasket failure, sorry for the bad news but white smoke from tail pipe = head gasket (big job)

White smoke is caused by coolant or water coming out the tail pipe. There is a chance that the white smoke was caused by water splashing up from a puddle onto the exhaust pipe. Keep an eye on the coolant level in the radiator in any event.

Let us know how it goes or if the problem persists. We're looking forward to how things go for you.