September 8, 201411 yr If there is no CEL or ECS light on, is that a good indication that it will likely pass emissions?
September 8, 201411 yr What model car? I've had Loyale / GLs fail with no light on. Bad Catalytic can do it. The computer does not know if the cat is working in these older cars.
September 9, 201411 yr Sorry, 85GL 85 GL is carbuerated, so will not have a CEL or ECS light...(unless it's from CA..then will have "feedback" carb) Proper ignition timing (including advance....can't have sticking weights), proper mixture, and a good catalytic converter will be the most important things to passing Emmisions. I can tell you get the enginge (and CAT) very good and warmed up before testing...the hotter the cat....the better it works....(to a point..then it melts...but that won't happen if your engine is OK)
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