hi all i have a 2002 2.4 voyager with 107k kms. the engine misfires on light acceleration and it gets worse when i put the heater power button on with or without aircon on. i have changed plugs, plug leads, coil and air filter, but the problem is still the same. when i accelerate hard there dosent seem to be a problem, it pulls smoth and reaches high speed easily. any one have any ideas!

 

hi all still havent figured this out, any one got any ideas because this is doing my head in.