Mazda Issues

[ee904age]

Not Toyota related, but the mrs has a 94 Familia with a 1500 sohc carb motor in it. It's idling quite high (1200-1300rpm) and im assuming its running rich as hell, because its using heaps of gas (300km /40l) and the exhaust is full of black soot. I dont know much about these motors but have recently replaced plugs, air cleaner, fuel filter and done an oil/filter change and its made no difference. Short of taking it to a garage with a gas analyzer, is there anything I can do to try fix this?

Any ideas??

Thanks in advance,
Shay.

[strx7]

is it carbed or Centre Point Injected? I'm guessing most likely that later and that is where the problem lies

[sergei]

I am not sure if it applies to your car, but some of the single point injections units incorporate a hotwire AFM into the throttle body housing. You might need to give it a clean with carb cleaner.

[matt dunn]

I am not sure if it applies to your car, but some of the single point injections units incorporate a hotwire AFM into the throttle body housing. You might need to give it a clean with carb cleaner.

Nissan models have that are are very bad for broken connection inside the unit from the AFM board to the plug.