Suzuki GS1000 ignition pickups and dual spark
Posted: Mon May 06, 2013 10:02 am
I am running a V3 Microsquirt version 3.83 on my 1981 GS1000. It's an inline even fire 4 cylinder with two coils (wasted spark setup). The stock system uses two pickup coils, one for cyls. 1-4 and the other for cyls. 2-3. The crank has a piece on the end with one tooth. Stock timing is 17 BTDC under 1500 RPM and 37 above 2350. A mechanical advance with springs is built in to the piece on the end of the crank.
When attempting to use these with the Microsquirt, I found they shared a common ground, so I rewired them so each has an output and ground. These were wired to the VR1 and VR2 pins as shown in the dual spark diagram using shielded cable. I see an RPM reading when cranking, and I have spark at the plugs for both #3 and #4 (did not test 1 and 2 as they are on the same coils).
The bike will not start. The battery was low but is being recharged. I've asked about the CLT reading in another post in the proper section. I'll attach the MSQ file. My data log files are in CSV format and I see I cannot attach them. I have the setup as dual spark, dual tach inputs and M=0 on the advanced ignition screen. The output is tied together and grayed out no matter what option I select.
I need help with timing settings to get the bike to run. Advice on MS Extra was as follows:
And start for cranking advance at 7 BTDC and start the timing table at 10 BTDC to 1500 RPM.
How do I implement this using Tuner Studio?
EDIT
I also have attached a screencap from the Tachref program. It's a little messed up in the middle where I tried to splice the pics together.
When attempting to use these with the Microsquirt, I found they shared a common ground, so I rewired them so each has an output and ground. These were wired to the VR1 and VR2 pins as shown in the dual spark diagram using shielded cable. I see an RPM reading when cranking, and I have spark at the plugs for both #3 and #4 (did not test 1 and 2 as they are on the same coils).
The bike will not start. The battery was low but is being recharged. I've asked about the CLT reading in another post in the proper section. I'll attach the MSQ file. My data log files are in CSV format and I see I cannot attach them. I have the setup as dual spark, dual tach inputs and M=0 on the advanced ignition screen. The output is tied together and grayed out no matter what option I select.
I need help with timing settings to get the bike to run. Advice on MS Extra was as follows:
And start for cranking advance at 7 BTDC and start the timing table at 10 BTDC to 1500 RPM.
How do I implement this using Tuner Studio?
EDIT
I also have attached a screencap from the Tachref program. It's a little messed up in the middle where I tried to splice the pics together.