same problem...

carburetor needs servicing... call dat fly kite unker...

maybe distributor
my 1.5 today gatal pull out vacumm hose to check and test vacumm hose condition and maybe terputus the vacumm somewhere now rpm 500 - 700 - 900 - 500 when idling
the rpm was 750 -800 flucturate before i mess it up

As I mentioned it before, my car's carb got issues.
I haven't go check nor retune yet (cuz final exam now lah)
So I wanna try to diagnose as much as possible myself, with the help of all the sifu-sifu here lah of cos.

So lemme get this straight, before I got this problem, I was running RON97 V-Power. Then I go for EON to do the 35000km service and timing belt change (car is second hand '04 LMST n-line). The mech there got adjust my carb abit lah, I think he mentioned something about the idling too low, causing the car shaking, so he make it abit smoother lor. Ok after that so far so good lah. (i could be wrong, cuz im not very well-versed in malay, and he speaks kinda fast  )

Then I still continue use RON97 cuz heard stories about RON95 will cause engine knock and bla bla bla (I was dumb I know). Then when RON97 increase to RM2.9/liter, i started pumping RON95extra from petronas, no issues so far (RM30 can go about 200+km). Then one night, my buntut gatal lor, go play drag race with my friend's BLM (i mentioned this before also ) Then problem liaw. I don't know why or how, just because I floored the car that one time, make my car's FC increase like hell (RM50 RON95xtra go for 150+km left 1 bar of fuel).

I asked before, and Fleek suggest me go retune my carb, but can I know what can I do in the mean time? Can I retify this myself? And what is the cause of this? I really want to know to avoid history from repeating again. I have little to no knowledge on mechanics (i learn about car's parts from video games, youtube videos, speedhunters, and uni textbook). I've tried ask a parts dealer about my problem and he says its because of my engine oil and spark plug (which i dont think this is the issue right now, cuz I've just went for service like 1-2months ago, and I think he just want to earn money from me so i dun give a damn about this).

Lastly, thanks for reading this long post. Sorry for being a noob here, but I am willing to learn! TQ.

Oh and my engine after the service, idles around 900 to 1000+rpm with aircon on, and 1000-1100+rpm when aircon off. During engine autochoking, about 1300+rpm.

Thanks again. Peace.

Guys im facing problem here,my saga lmst everytime when start car,during engine cold,the auto choke does not work,the rpm stay around 500+..the car is choking and shaking,like not enuff air/fuel,
i hav to press the pedal for long time ,rev it to 1.5k rpm only ok.

Anyone noe how to adjust the setting of auto choke on 4g13 carb ar?

Last time it was cheap..RM450..nowadays hard to get as Speedworks will only concentrate on newer engines...

Just try to look for 2nd PZ extractors in Mudah.

And my fren is selling some of his UR bar. If you interested pls do let me knw.