Dual Electroair Ignitions Poor Idle - SOLVED
Hey folks,
I have a freshly rebuilt IO-360-C1C (Angle Valve) that I'm running dual Electroair EIs on (the newest model). I've been having trouble getting it to idle below about 1000rpm without misfiring and stumbling. At first I thought maybe it was due to the idle mixture not being set correctly (the fuel injection system is also freshly rebuilt), but setting it richer or leaner still will not let it idle below 1k. I checked for induction leaks and did find a bit of an air leak at one of my intake tube gaskets, so I replaced that and confirmed no more leaks. Still no better at idle though. I verified the mag timing sensors were set correctly with the alignment pins dropping right in as #1 was at TDC. I verified that the actual timing matched what the controllers were reporting, both indicating 35deg BTDC at ~1100RPM and 13" MAP. On a hunch I disconnected the MAP sensors forcing the timing to go to 25deg, and low and behold she idle smooth as silk all the way down to 550rpm. I've confirmed the compression is good, all were 78-79/80.
Electroair tells me it should idle fine at 35deg advance, but I'm not sure what could be causing mine to misfire so bad. If anyone here as any thoughts or experience with this I'd be incredibly grateful.
-John Basol
Cozy MKIV - Barely into Phase 1 testing.
Hey folks,
I have a freshly rebuilt IO-360-C1C (Angle Valve) that I'm running dual Electroair EIs on (the newest model). I've been having trouble getting it to idle below about 1000rpm without misfiring and stumbling. At first I thought maybe it was due to the idle mixture not being set correctly (the fuel injection system is also freshly rebuilt), but setting it richer or leaner still will not let it idle below 1k. I checked for induction leaks and did find a bit of an air leak at one of my intake tube gaskets, so I replaced that and confirmed no more leaks. Still no better at idle though. I verified the mag timing sensors were set correctly with the alignment pins dropping right in as #1 was at TDC. I verified that the actual timing matched what the controllers were reporting, both indicating 35deg BTDC at ~1100RPM and 13" MAP. On a hunch I disconnected the MAP sensors forcing the timing to go to 25deg, and low and behold she idle smooth as silk all the way down to 550rpm. I've confirmed the compression is good, all were 78-79/80.
Electroair tells me it should idle fine at 35deg advance, but I'm not sure what could be causing mine to misfire so bad. If anyone here as any thoughts or experience with this I'd be incredibly grateful.
-John Basol
Cozy MKIV - Barely into Phase 1 testing.
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