Hello guys, this month i noticed my car have an issue with acceleration. When accelerating from 0kmh-40kmh, it feel a bit hesitated, like something is holding back the cvt not to shift yet. And from 40kmh-60mkh (60kmh is my normal cruising speed since i live in small city), the car is struggling to reach the 60kmh mark, kind of lagging and pause at 50kmh. Not unless i floor a bit of gas, then it will get to 60kmh-65kmh. The engine also sounds a bit rough on idle than usual, just a bit tho, not crazy rough.
Year:2015 Mirage G4 (5th years)
Mileage: 60,000km
Recent service at 50k km: Engine oil, oil filter, cvt oil, cvt cartridge filter, coolant, air filter (all in correct level)
Im a light footed type. Very seldom cruising at 2k rpm and above. Mostly i limit my rpm at 1.5k rpm/60kmh. But now i need to push abit at 1.7k rpm to maintain 60kmh, make the engine struggle a bit and sounds rough, which bother me. I did checked for dtc on my elm327, but no code.
Thing that i have done recently is cleaning the tb and the map sensor. Its dirty. After the cleaning, the car behave overpower a bit, myb because of coolant air pocket symptom when i removed the tb. But now after 1 week, the car back to its old problem. My next guess is either one of those: {spark plug, coil pack, dirty injector, dirty fuel filter, weak fuel pump}.
I just ordered a set of denso iridium power spark plug. Any recommendation, or if u guys ever experience my problem pls feel free to share or advise. Thanks!
This was solved by cleaning out the fuel system: