sprack Posted July 19, 2003 Share Posted July 19, 2003 On a '99 is it possible to adjust the mixture without a PCII or is that the only way? I can smell it's a bit rich running and there's some soot on the exhaust. Would explain the poor gas mileage (23-30mpg). I've tried unplugging the batter to have the ECU reset. Any other suggestions? Quote Link to comment Share on other sites More sharing options...
XXTi Posted July 19, 2003 Share Posted July 19, 2003 My '00 smelled rich and smoked the ends of the mufflers too until I replaced the plugs. Have you replaced yours lately? Quote Link to comment Share on other sites More sharing options...
sprack Posted July 20, 2003 Author Share Posted July 20, 2003 About 150mi ago. Quote Link to comment Share on other sites More sharing options...
SwampNut Posted July 20, 2003 Share Posted July 20, 2003 Air filter? Quote Link to comment Share on other sites More sharing options...
sprack Posted July 21, 2003 Author Share Posted July 21, 2003 Same time as oil and plugs. Air filter? Quote Link to comment Share on other sites More sharing options...
sprack Posted July 21, 2003 Author Share Posted July 21, 2003 Joe, All of that is possible. Idle appears normal. I haven't really wrung it out..160 on the interstate, but nowhere near the revlimiter. All cylinders sound like they're firing, I guess a compression test wouldn't hurt to make sure they're even. I didn't adjust the gap on the iridiums, forum concensus on that was iridiums are fine from the factory. I'll check the hoses and airbox next. I appreciate the input. Is the idle okay, have you wrung it out recently, and are all the cylinders firing? Could a spark plug cap be on incorrectly, or the air box not seated just right, or a hose off? Quote Link to comment Share on other sites More sharing options...
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