Originally Posted by nikhilalobo
Can anyone please suggest any alternative plan.
I would like to throw some light for you.
The alternative way by which you can attain smoother idle by switching to
High performance Air Intake Filter(K&N), Iridium spark plugs, Fully Sythetic Engine oil.
According to my car, It vibrates in the 1000-950 range of rpm, and its almost negligible in the actual idle rpm range, ie around 900rpm. (Ya its not smooth as a 4 pot engine do.)
I'm also using the same kseries engine (2009 year). But with the above upgradations, i feel the engine is lot smoother.
Can you please tell me what grade of engine oil you are using? I heard some MASS are also using 0w-20 grade engine oil in the kseries engine. Its good for better mileage and performances but not for the engine smoothness and protection
I have used Mobil1 0w-40, 5w-30(fully synthetic) and 5w-30semi-synthetic engine oils.
I feel the best in 0w-40 grade oil. It gives the best engine smoothness in all range of rpms.
5w-30(fully synth) This is what presently I'm using in my car, Its not smooth as 0w-40, but its far better than the same grade of semi-synthetic oil.
If you have already got the performance filter and iridium plugs then consider switching to 5w-30 or 0w-40 ( Mobil1 fully synthetic engine oils).
PS: Experiences that I have shared is with the car A-star.