Quote Originally Posted by isa1023 View Post
You basically have the same carb with my Mazda 323 Astina, only that my jets and barrels are bigger in diameter. Below are my two-cents worth as per experience on the carb.

Anyway, how erratic is erratic? Going up and down? Frequently? With aircon on and off?

AFAIK, carbs lose tune overtime especially pag may singaw na [SIZE=1](needs repair kit)[/SIZE] or depende sa atmospheric pressure [SIZE=1](cold/hot? - yes, hindi lang EFI ang affected nito)[/SIZE] at ambient temperature [SIZE=1](hot sunny day/cold rainy nights).[/SIZE]

Ilang RPM menor mo pag may aircon at wala?

May backfire ba (parang sinisinok or inuubo yung kotse)? If it backfires even on idle, have your air/fuel ratio fixed asap. It could cause overheat (mixed too lean).

Na-try mo na ba i-remix yung air/fuel ratio?



Don't do this too often, especially spraying directly to the barrells without throttling higher revs. Your carb is downdraft. Now imagine where all that dirty slime go.



Four-year old spark plugs and wires?

I'm beginning to think this could be the culprit.





How fine is fine?

If it really doesn't "lose power" or "jerk", then rule out the backfiring issue.

Does it eventually start after stalling? O hard starting na?



How did you check if there was spark?





Diba kapapalit mo lang sir?



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Take it to a reputable shop sir.

Good luck.

1 I rarely use it, ngayon ko lang uli lang po ginamit yung carb cleaner
2 Engine does not overheat naman and no backfires
3 Inalis ko yung isang high tension wire with spark plug at nung turn on namin engine, walang spark nong ground ko sparkplug sa body at engine ng oto, nahawakan ko pa nga wire and di ako nakuryente..hehe
I'll try changing the plugs and wires later, pero hindi ba rare na magsabay pumalpak either ang 4 na plugs or wires at walang spark from plugs 1-4 eh ?
4 Hard starting na sya after stalling pero minsan nagstart din agad siya
5 Distributor cap lang napalitan hindi yung buong distributor, pero my distributor is already old and I suspect it is still the original so it might make it 18 years old. Sabi ng bro ko baka bumibigay na yung components nya or rotor
6 Walang rpm gauge po oto ko pero pansin ko hindi constant tunog ng idle nya pag pansin ko na bumaba parang my very slight shaking nang engine ( ganito na sya noon pa) with aircon on and off
7 Im residing pala in Baguio City kaya hindi pwede kila speedyfix. Papatingin ko mamaya sa mekaniko oto, sana makita na namin culprit.