Post by carasdad on Apr 24, 2014 12:51:11 GMT -5
Suffering a Minarelli Migraine. Ok..blinkers will work when key is on and engine is NOT running.(As they run off of the battery on this typical AC system) Leave blinker on and crank engine and they go off and will not blink. Leaving them on and hitting the Kill Switch they begin to work again. It gets more bizarre..trust me. Check the battery with engine off and it reads 12.
VDC. Start the engine and the multimeter flips and flashes numbers so fast ya can't see them when ya check the battery. Hit the Kill Switch and it goes right back to 12. VDC. Engine and frame grounds all check out..all lights work fine..horn E-Start etc. Try to check Stator AC output is a no go. Unplugged from the harness black on black..and red to yellow then white wire shows mayhem!!! The meter just flashes all kinds of random numbers and gives no output reading. Again Scooter starts and runs fine! BUT..while running..if you unplug the 3 wire Stator connector..the engine idles WAY high to about 3,500rpm and stays there.(yes even after the auto enricher has warmed and shut off) Plug the Stator connector back together and it instantly drops down to a nice 1,800-2,000 rpm idle... ::stumped:: But still no flashers or stable/readable output from ANY Stator wire. In fact even the red CDI power wire does this..you cannot get a normal 40-100 VAC reading from it..3 different Meters used for all the testing..and they all just flash when testing ANY wire from the Stator. Again..red CDI..yellow lighting..white for charging and even blue for the pickup trigger...all just flash random numbers. YET!! The Scooter starts and runs fine. Now the very odd part. Set the Meter to AC then DC and touch ONLY the Meters black wire to the frame at either setting...and you get the same flickering of the Meter...just as ya do when putting black to ground and red to a Stator output wire. Shut the engine off and do the same..just touching the black lead to ground..and you get a 0.0 (normal reading) Swapped in a good Stator..same thing..tested and swapped a new R/R along with it..same thing. Tested the leads to the auto enricher in case it was shorted and voltage to that flickers as well. Unplugged the auto enricher to rule out a short in it..and still the same. Removed the black kill wire..same thing. It seems as if their is a Hot to Ground short in the system maybe??? Yet only present when the engine is running..??.. 
The only upgrade or change the guy has made to the Scoot was to use 194/T10 base LED lights in his instrument cluster. Soo..I wonder..since LED's are polarized..could they be acting like a 1/2 wave rectifier or diode and dumping part of the AC current from the Stator to ground... causing a short/hot to ground effect?. I know LED bulbs can create havoc on some systems..but the blinker bulbs are standard filament type bulbs..only the dash panel bulbs(that run off the Stator) ate LED bulbs. But even if they were acting as a diode does and dumping 1/2 of the Stators AC current to ground..would I not still be able to get a good..steady..stable and visible AC reading from all of my Stators wires?.. 
Umm..so like..somebody...Help??
Thanks, Glenn
VDC. Start the engine and the multimeter flips and flashes numbers so fast ya can't see them when ya check the battery. Hit the Kill Switch and it goes right back to 12. VDC. Engine and frame grounds all check out..all lights work fine..horn E-Start etc. Try to check Stator AC output is a no go. Unplugged from the harness black on black..and red to yellow then white wire shows mayhem!!! The meter just flashes all kinds of random numbers and gives no output reading. Again Scooter starts and runs fine! BUT..while running..if you unplug the 3 wire Stator connector..the engine idles WAY high to about 3,500rpm and stays there.(yes even after the auto enricher has warmed and shut off) Plug the Stator connector back together and it instantly drops down to a nice 1,800-2,000 rpm idle... ::stumped:: But still no flashers or stable/readable output from ANY Stator wire. In fact even the red CDI power wire does this..you cannot get a normal 40-100 VAC reading from it..3 different Meters used for all the testing..and they all just flash when testing ANY wire from the Stator. Again..red CDI..yellow lighting..white for charging and even blue for the pickup trigger...all just flash random numbers. YET!! The Scooter starts and runs fine. Now the very odd part. Set the Meter to AC then DC and touch ONLY the Meters black wire to the frame at either setting...and you get the same flickering of the Meter...just as ya do when putting black to ground and red to a Stator output wire. Shut the engine off and do the same..just touching the black lead to ground..and you get a 0.0 (normal reading) Swapped in a good Stator..same thing..tested and swapped a new R/R along with it..same thing. Tested the leads to the auto enricher in case it was shorted and voltage to that flickers as well. Unplugged the auto enricher to rule out a short in it..and still the same. Removed the black kill wire..same thing. It seems as if their is a Hot to Ground short in the system maybe??? Yet only present when the engine is running..??.. The only upgrade or change the guy has made to the Scoot was to use 194/T10 base LED lights in his instrument cluster. Soo..I wonder..since LED's are polarized..could they be acting like a 1/2 wave rectifier or diode and dumping part of the AC current from the Stator to ground... causing a short/hot to ground effect?. I know LED bulbs can create havoc on some systems..but the blinker bulbs are standard filament type bulbs..only the dash panel bulbs(that run off the Stator) ate LED bulbs. But even if they were acting as a diode does and dumping 1/2 of the Stators AC current to ground..would I not still be able to get a good..steady..stable and visible AC reading from all of my Stators wires?.. Umm..so like..somebody...Help??
Thanks, Glenn
