just to share my method; i use 10ml of 3M fuel system cleaner for each cylinder by pouring it through the spark plug hole leave it for like 5 mins, then use another 20ml and let it suck through the fuel regulator's vacuum hose, balance i just pour into fuel tank and then start engine.
to me, any of those carb cleaner or injector cleaner or fuel system cleaner will work ler. doesnt have to be exactly those decarb product. all of them has the same objective, to remove any sludge or carbon or dirt. its like some sort of detergent ler...i tried using 3M, STP and also Redex b4, all also got heavy smoke coming out from exhaust. and it kinda cleans ler, coz after doing it my engine revs very light. i do it like every 5,000km when i service my car. 1st few times i do very heavy smoke ler, then after a couple of times and doing it regularly, the smoke not as heavy as the 1st few times edi. maybe not as dirty as the 1st few times????
to me, any of those carb cleaner or injector cleaner or fuel system cleaner will work ler. doesnt have to be exactly those decarb product. all of them has the same objective, to remove any sludge or carbon or dirt. its like some sort of detergent ler...i tried using 3M, STP and also Redex b4, all also got heavy smoke coming out from exhaust. and it kinda cleans ler, coz after doing it my engine revs very light. i do it like every 5,000km when i service my car. 1st few times i do very heavy smoke ler, then after a couple of times and doing it regularly, the smoke not as heavy as the 1st few times edi. maybe not as dirty as the 1st few times????