Elect Ign Distributor Output LOW?
Reading this again makes me wonder about my other ignition, Mazda B2000 w/electronic distributor. Kinda the same issue: I got a wandering vacuum guage from 19-23, it just lazily goes up and down while the 4 banger idles like a diesel. I shot carb cleaner everywhere and no vacuum leaks, RPM is not stable either. 3 different carbs little change. I can plug the PCV and get another 2 inches vacuum but it still wanders. All valves are lapped in, double valve springs and blueprinted spring height as well as new head and intake gasket. Pretty steady exhaust flow with a random miss about 3 every 5 seconds? I replaced the Ignition control module (black plastic semi-circle with 4 leads off it) but never replaced the "reluctor" that has 3 (?) pickups off it....? Why 3? could these be out of spec gap wise? Never even checked them as they dont seem to be adjustable. Even threw a Hi-6R ignition on it with absolutely no change. timing light off #1 is steady.
Reading this again makes me wonder about my other ignition, Mazda B2000 w/electronic distributor. Kinda the same issue: I got a wandering vacuum guage from 19-23, it just lazily goes up and down while the 4 banger idles like a diesel. I shot carb cleaner everywhere and no vacuum leaks, RPM is not stable either. 3 different carbs little change. I can plug the PCV and get another 2 inches vacuum but it still wanders. All valves are lapped in, double valve springs and blueprinted spring height as well as new head and intake gasket. Pretty steady exhaust flow with a random miss about 3 every 5 seconds? I replaced the Ignition control module (black plastic semi-circle with 4 leads off it) but never replaced the "reluctor" that has 3 (?) pickups off it....? Why 3? could these be out of spec gap wise? Never even checked them as they dont seem to be adjustable. Even threw a Hi-6R ignition on it with absolutely no change. timing light off #1 is steady.