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Re: 1988 daihatsu charade carburetor
If we are talking the three cylinder CB23 engine the mixture screw is hard to get to and has an anti tamper shroud to stop prying fingers.
The Aisan carby is pretty reliable and problems with them on these engines is usually due to improper vacuum hose connections, or improperly adjusted idle, fast idle and deceleration screws.
A/F ratio is around the standard 14.7, but being a carby you will not get consistent mixtures because the jets sizes are fixed . On an EFI engine you can control the fuel flow, but not so with jets.
If you do decide to give your carby a birthday make sure you only buy the Daihatsu genuine, because the after market units have issues with quality. The minor rebuild kit part No 0421287704000 and the major overhaul kit with plunger, needles, gaskets, clips,
etc is part No 0421187729000.
If it was me I'd be concentrating on the hoses, the PCV valve, contact points in the dizzy and better spark plugs first. If you want much better idling and a bit better pull get an electronic dizzy and coil from a G200 series Charade.
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No reference to your model 1400...but if it has a carburetor the air/fuel mixture is set with 2 screws on the front side...to adjust each one...car must be running, turn each screw clockwise until your motor starts to stall...then back out (counter-clockwise 1 1/2 turns from stall...should smooth out as fine tune adjusting...each screw must be re-set this way...could also be dirty or clogged air filter, dirty carb throttle body...and need new spark plugs...probably needs the standard parts tune-up...Hope this helps.
Unless your engine has a carburetor, you can't adjust your fuel mixture. That is done by your cars computer. It analyzes your exhaust emissions and adjusts your fuel/air ratio.
Your oxygen sensor(s) may need to be replaced, or there may be a computer glitch causing the problem.
First, do a tune-up. Make sure your air filter is clean and the idle air passages in the carburetor are clear. I assume at one the idle mixture was properly set, so if it's no longer idling properly, something else has changed. Fouled plugs or bad fuel could be a cause. In particular, ethanol-blend fuel that has been in the tank for several months will not work well in engines without electronic controls.
There are many possible solutions including: Bad gas, needs tune up (points, plugs and/or timing), idle adjustment, computer problem, bad or dirty fuel or air filters or carburetor, etc. Get professional diagnostics & or service.
Gas Smell from Exhaust
Sometimes you may find that the exhaust smells like gas. This is normally a problem with the air and fuel mixture as your fuel injector may be sending too much gas through the engine and not all is burning. This can easily be fixed by having your engine properly tuned. You also may not be using the correct brand of gasoline. Therefore the engine and exhaust are not working properly which results in gas like odors emerging. You may also find that the fuel injector is clogged and needs cleaning. Another cause of this gas smell is a stuck choke if you have a carburetor.
usually turning screw clockwise sends the main jet down (opening more) getting more fuel through (richer) and opposite is 'usually' for leaner, or 'weaker' mixture... get hold of a Colourtune carb tuning tool.. this will help endlessly..
Your idle fuel mixture it too lean. What this means is that it is not getting enough fuel at an idle. The most common reason for such problems are either problems with the linkage or vacuum lines or dirt or water in the carburetor. Make sure all your vacuum lines are good and connected, especially the one that goes to your distributor. Unless your fuel system has water in it or has had the filter removed and replaced with a hose, it is unlikely that the problem is the carburetor, unless the car has been sitting for a long time. Check these other things, first. Also, before your pull your carburetor off if these other things are not the problem, make sure your engine ignition has been properly tuned. Ignition problems are the most common problems on gasoline engines.
Hello, rachelj70 and thank you for asking your question on Fixya!
Here is a simple process that will walk you through a few steps that
will pinpoint the overheating problem on your 1988 Daihatsu Charade,
without even using any tools. It has helped millions of people, and I am
certain that it will help you, because I wrote it for people in your exact situation. How to diagnose your overheating 1988 Daihatsu Charade
If it's not had a service for a fair while I would start by fitting a new set of spark plugs, and air filter element, so you are starting from a firm footing, if still problems it may be worth a quick engine check