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shoemaro

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  1. I have an 89 YJ 2.5L that gets around 8-10miles per gallon, puffs out black smoke when you rev it up. At one time I had a kinked fuel line, fixed that, now getting the proper fuel pressure. Engine idles good feels flat getting past 45mph. I have changed every sensor on this. Cannot seem to figure out. No vacuum leaks, changed exhaust/intake gasket (did not see a crack in exhaust manifold). One question, I can put my hands over the throttle body with the air filter disconnected, it will not kill the engine, engine does not even stumble? Any thoughts? Could EGR valve cause an extremely rich mixture?
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