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Hey all,
My car a 1989 mazda 323. Its carbureted and has a 1.5L in it. It runs well except when i get my foot down. If im accelerating at maybe 20% throttle and i decide depress it to 80% throttle lets say, The rpm would increase but very slowly and i dont get much more power than i would have if i was at 20%. If i have weight in the car its even worse or if the AC is on.The engine just gives a deeper sound. I have adjusted the idle mixture for best vacuum, the acclerator pump and the float level in the carb. I am not sure if it is running lean or rich but i can say that fuel economy is poor. The carburetor has original jets, and was rebuilt like 2 years ago.
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If you rev the car at idle does it feel strong/powerful?
Can you see fuel spraying in the carb when you do the rev.
choke fully open?http://www.ericthecarguy.com/faq/solving-automotive-performance-issues
If u mean in neutral and revving, yes it does. when i look down in d carb there is fuel spraying while i pull the throttle. And the choke is fully open for sure because its a manual choke, no fancy bimetallic strip or electrical solenoids. Another thing is i smell gas on the highway when i try to acceleration fast.
Oh an i have read eric’s article. Also there is no vacuum leak.This one is really kinda funny i check alot of stuff.
Exactly right?? I was thinking the same thing. I dont have an exhaust back pressure gauge but Eric’s way with the vacuum gauge i can do, ill do it and see what i come up with. The engine doesnt burn a drop of oil, and i use full synthetic. There is no cat in this car. they didnt come with it back then in my country, but there are 2 resonators and a muffler.
The cat is usually where this problem is encountered. However I have heard of double wall exhaust piping. The inner wall rusts out and collapses. Usually, if double wall piping is used it is the pipe connected to the exhaust manifold.
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