1. i have mitsubishi montero limited 2002, it has some detonation, wrote service engine soon, when i checked there was ritten problem - poor mixture in the bank 1 and bank 2 - do you know what does it mean? and what should i do to repair the detonation.

2. what is the difference between mitsubishi montero limited 2002 dohc and the same sohc?

 

What actual codes you get from your Montero? P###?
As for part 2 of your question - DOHC = Double over head cam, SOHC = Single over head cam. These are different engine configurations, which means that some parts will be specific to particular engine.

 

either the fuel or computer is crap.
My money is on computer. (sensor)

 

Thank you, the service manager did not tell me the codes, he said that there was written: poor mixture in the both banks an it wold be air problem in engine, but he could not tell me what is it.

 

so, means twin bank modified engine is ,, dohc ``? is it so?

 

twin bank means v engine.

 

so, will it be same spark plug wires for sohc and dohc? or it will be different?

 

take your vehicle to a man that knows things.

 

achiiiii, you are asking what something is - without knowing what you're asking for.

We don't know where to start without knowing the code numbers, since we're not driving your truck.

Having said that, dohc,sohc, have nothing to do with poor mixture.
spark plug wires probably have nothing to do with it either.

If I were pushed, my guess would be dirty Mass air flow sensor (depending on the code numbers) it can be cleaned easily in 5min. (by someone who knows what they're doing)

maybe oxygen sensors (again code numbers)

detonation generally is caused by running really hot or really lean mixture

Do you know if anyone maintained the truck or was it run until it broke?

I agree, take it to a mechanic who's not afraid to give you detailed information

luck,greg