Very well said bro.. but thats how we all learnt this stuff
anyways. seeing ur response i dont think there is an immediate threatning issue.. that idle blue smoke is something we cant correct by tuning anything.. anybody correct me if i am wrong!!!
As i said a puff of black smoke at acceleration is OK! huge clouds of smoke.. well let me explain why there is black smoke.
Black smoke on acceleration is unburnt diesel.. you are pumping more fuel than the engine can burn.. reason could be:
- Pedal to floor condition - diesels usually dont like such situation.. avoid it.. gradual is better.. try this
- Air restriction - if there is low oxygen how will the fuel burn.. same thing we notice on high altitude
- Overfueling - this is the last thing to tweak
- nozzle spray pattern - we need a spray here.. you have already done that
Learn about your engine The turbo is pumping in air/oxygen for good burning. the turbo engine's injection pump (IP) is set to add a "little more" fuel so that you get that kick in speed! this happens when the turbo is at a certain RPM i.e. sufficient boost pressure.. the pressure is fed back to IP via a diaphram to "fuel up".
thats the theory part
First thing to check is Air cleaner and all piping - No restriction!
then check ur turbo operation..
- Is there any oil consumption issue? Any visible leak/seapege around turbo?
- You need a boost gauge. I used a normal pressure gauge (25PSI max scale).. made an adaptor to fit in a capilary pipe.. this gauge can be installed permanently in the jeep so u knw how much pressure the turbo is building.. get this gauge to confirm turbo working.. (will put up pics of my setup)
- Once you establish turbo is OK.. this means ur pump diaphram is a bit off.. may be adding too much fuel thats creating the black cloud.. there is a whole procedure to do it.. can be done easily.. but needs a full smoke therapy course work
thats it for now.. going for a meeting.. let me knw if this helped