alsil Posted July 3, 2003 Share Posted July 3, 2003 I have always been confused by this, so I gotta ask to get the real scoop. If the mixture is too rich, the car will run hotter.....right? My car runs cool except when I'm going up hill for a while or really stepping on it. I know the water pump and radiator are working great, it cools off pretty fast after I let off. I have never been sure whether a lean condition will make you run hot, or a rich one. Any ideas? Al Quote Link to comment Share on other sites More sharing options...
Mike C Posted July 3, 2003 Share Posted July 3, 2003 Running rich is cooler in a gasoline engine. Running lean makes more heat. Diesels run cooler the more air you feed them, however. More power=more heat. THat's why you get hot under load. Sounds like your cooling system is working the way it should. For long term high load operating you should increase your cooling capacity with a larger radiator and possibly an engine driven fan depending on what your car has in it. Quote Link to comment Share on other sites More sharing options...
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