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Too much exhaust help


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1972 240z with a 280z engine, just did an oil change, alot of the wiring isnt hooked up, but when i start the car, it idles great, runs just as good so far, but it spits out some damn thick exhaust, there is no cat on this car ;p, but even for a car with no cat, but there is even to much exhaust for no cat, any ideas on how to tune it so it doesnt do this, or as bad? :) thanks, james

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  • 2 weeks later...

I would like to help you but I cant figure what the hell you are talking about. Are you saying that there are a lot of fumes , smoke and such , coming from the exhaust? You say that you have a 280 engine , how is it fed by SU round top carbs or fuel injection ? Is the engine in tune ? how are the spark plugs, rotor , dist cap ? Are you running points or a later ignition?

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