Assalamualaikum. Hello to everyone! I have bought a 1995 Indus with a 4AFE A/T. It had an engine and transmission swap by the previous owner with a Japanese Auto Tranny and 4AFE. It is giving me 6 kmpl average along with a check engine light. Though it had Vitz injectors at first and I replaced them with the original 4AFE ones. It has Iridium spark plugs but have some yellowing on the ceramic sides of it. Could it be the sign of current leakage and can it be a contributing factor to bad fuel economy? Is 6kmpl in city normal consumption or can it be improved?
Secondly, could anybody please share the vacuum hoses setting of the engine? I believe it might also contribute to a better fuel efficiency. Please guide me as it is my first comment in this group. Thank you.
Jazaka Allah khair