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I have a 1992 Japanese import with a 660cc F6A engine. Where I live, there's pretty strict emissions standards and my Jimny won't pass. My CO emissions are almost 4 times the max allowable. My mechanic friend thinks it's burning too much fuel and unburnt fuel is getting through to the exhaust system. Given my mileage isn't what I think it should be, he might be right. He was wondering what fuel injection system it uses. Any ideas?
 

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If it has an O2 sensor on the exhaust then that may need replacing, if there is no O2 sensor then look around the wiring for an adjuster that lets you tune the mixture setting. Injector system is likely to be Mitsubishi or Denso.
 
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