My car is a manual. The shifting has never been smooth since I started driving it, so felt like want to do some flushing if it helps. Shifting only smooth sometimes after the engine has been running for a while.

Btw, regarding on Davidke20's comment on shifting at 2.5k RPM and above, would it does more harm to my old engine's pistons as it always spins at high RPM? I normally drive 60km/h (hahaha my hometown people all drive slow slow, so so do I ) so it will be at 4th gear at 2k RPM constantly, realised that I stepped less on the pedal at 4th gear as compared to at 5th gear, but just scare at constantly 2k RPM will like, does harm to my old engine

Harm your head Our 4G1x series engines crankshaft was balanced for 10krpm. RPM itself does not harm the engine as long the engine is balanced. U put 5th gear, use semi-declutch to pickup at 400rpm, that 1 really harming the engine It's never about which RPM u shift, its always HOW LONG DOES IT TAKE to reach certain RPM

no just change your manual gear oil more regularly for flushing purposes.
consider using a lower viscosity gear oil, and/or gear oil with high viscosity index, or even an additive like lubegard manual.

as bro david said, rpm is not the factor that harms your engine.
low is definitely not a problem, and high, well constant red lines (past 6/7k rpm) *MAY* harm your engine in the long run, however i do that all the time on my iswara (track days, simply love speeding etc) and it's still pretty fine.

i mean geez, my meter only got 180 km/h, and i am doing 176:
http://youtu.be/4FdPEYOH-BQ?t=1m12s

the engine was running at 6 or 6.5k rpm.
did it harm the engine? maybe.
is it still running fine today? yes my sister just drove it to work, and came back home from work.

adjust your ignition timing properly.

Ayam a regular petrong user, and belib their ron97 is the worst in the market normal engine sound indeed reduced, but will create knocks when engine on load funny shit, dunno what kinda soap water added

i'm ok on Petronas 97 lol

thanks for the tips.
i adjust the screw no.1 able to adjust the cold start.

recently the car park for few days but when go start it, it easy to go turn off, feel like oil/gas no go in to engine.
anything can try do before go workshop again?

engine timing? increase it ? or reduce it??

Retard distributor for Ron95

Hi all, anyone face the wind noise problem? How to reduce it?
I suspect the sound from the door window.

check all the 4 windows?

How to check? when i drive 80km/h speed , can hear the wind sound, if more fast 90-100km/h, wind sound get loud and loud.

By the way, any sifu here can recommend to install nice and sporty bumper, skirt and spoiler?

make sure you closeyour doors and windows tight.

Yup, the door and window is tight, i even have change the new car door rubber seal for four doors, the wind sound still there.

wow , how much is that ? all the rubber seal...

Rm40 per door including the labor fee...
If you go DIY, you might get as low as RM25~30 per door.

Yours a sedan or hatchback?

Possible source of the sound could be from the air vents which are holes in the panel to allow suction of stale air to the outside using venturi effect. These holes bypass the door seals.

Do a test by temporarily taping up these holes and see if got any difference. After that remove the covering tapes as these holes are important for ventilation.


Attached thumbnail(s)

Your car ar? So clean Bucket sumoar

No. The picture I borrowed/stole from the internet.