How to fix overheating of 4d56 engine - 1993 Mitsubishi Montero

http://www.mitsubishi-motors.kiev.ua/Manuals/Engine/pwee9067/11B.pdf this will give the valve clearance as well

the switch should be in the radiator, but not sure

I suggest download this specific Factory Service Manual: Mitsubishi FSM Engine 4D56-25-diesel

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4d56 engine rpm

i think that is the engine code

Check your fuel tank, fuel pipe and hoses might have a leaky somewhere.. else your injection pump has a leaky internal high presure pump.

the clue is in the heater not performing correctly,YOU HAVE AN AIRLOCK,.....undo the topmost hot hose clip to vent any air making sure the expansion bottle is full.....use only antifreeze to keep up the right mix.

get you the 3.0 v6 6g72? should be the v6 option for the 89 and up montero

4d56 is a diesel engine, fuel, oil, air filter change definitely, regular oil change, check tyre pressure, etc all basic things u can do yourself, after all its no 40+ MPG modern diesel engine its been around for years and years and being used in courier van, pajero and delica, i have a Delica with 4D56 turbo and its loves drinking diesel like no tomorrow, run it on veggie oil like i do you wont worry too much about your fuel consumption.