Hello everyone,
I recently serviced spark plugs of my Pajero Mini as it was giving some trouble. I found out that front-most and last plug had carbon deposits on them, also edges just after threads were damaged / rough (I forgot to take photos). Both plugs in middle were in good condition, and no carbon on them. In previous service, all plugs were in good shape and shown no carbon deposits.
I cleaned up all, fixed back everything, still there's some missing like feel when accelerating and trying to push after 70km/h speed in 5th gear. There's no smoke or oil consumption.
What should be the first thing I do? Planning to replace plugs, but before that I want to know if there's anything else needs to be done?