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Old 09-07-2012, 03:37 PM   #69046
ADV8's Avatar
Joined: Nov 2007
Location: North of Sydney.
Oddometer: 2,110
Originally Posted by eakins View Post
the pulse coil is where the 2 spark plug wires come off of and provides spark, correct?
This is a Suzuki TL1000 but the DR650 looks the same (Has a smaller stator)

Originally Posted by procycle View Post
The pulse coil is inside the left engine case with the stator. It provides the signal to the CDI to tell it when to send spark energy to the ignition coil. There are 9 wires coming out of the stator case. 3 are yellow (AC stator output) 1 black and 1 white are from the charge coil (provides energy for the spark) 1 blue and 1 green are the pulse coil (provides the ignition signal). Pulse coil failures are not all that unusual in the DR650. The stator makes quite a bit of heat and has constantly pulsating magnetic fields that can physically stress the wires in the windings. The stator is cooled by engine oil. Slow riding in hot weather (I bet Jay has done a lot of that) can shorten the life of all the stator coils. The pulse coil seems to be the most delicate.
Les .. 1968 Husqvarna MF250 and MF360 - 1971 Norton Commando Fastback - 1973 Kawasaki H2A - 1973 Ducati 750 GT - 1973 Moto Guzzi Eldorado - 1974 Kawasaki H2B - 1974 Triumph TR5T Trophy Trail - 1981 Ducati 900 SD - 1986 Husqvarna 400 WR - 1998 Suzuki TL1000S - 1998 Suzuki TL1000S - 2007 Ducati Hypermotard 1100S - 2008 Suzuki DR780.
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