Originally Posted by
dn010
All you do is put the clamp around #1 wire and pull the trigger. If you have the setup manual for ms3, refer to page 53. You disable the fuel, set your timing to 0 degrees (Ignition Settings -> Ignition Options / Wheel Decoder -> Cranking Advance), put your timing light on and with someone cranking see how far off, if at all, your timing it and then adjust it.
Ok, a question about this. This is in the MegaManual for EDIS:
To test the VR sensor alignment, run the EDIS in limp home mode. This can be done by disconnecting the SAW/PIP plug, or disconnecting MegaSquirt-II (or its power).
Start your engine and check that the timing is exactly 10° BTDC with a timing light on cylinder #1. If the timing isn't 10° BTDC, adjust the position of your VR sensor until the timing is as close to 10° BTDC as you can get it. Note that at very low rpms (less than 400) the EDIS with no SAW input will start at almost TDC and as rpm increases towards 400 the ignition point will approach 10° BTDC; it will be stable above that engine speed. So the engine must be running to check the timing, cranking won't work. Don't forget to reconnect the SAW/PIP plug when you are done, or you will have NO timing advance and your engine will run poorly and inefficiently.
I have not tried to align the VR sensor yet, but the implication here is that the engine must be running, not cranking, or EDIS won't work properly.
It sounds like what you're suggesting is a different kind of test than the one used for VR sensor alignment?
Also, another point of confusion, this time about EDIS-6 firing order.
According to the MegaManual link above, EDIS-6 firing order is ABC (pairs of coils), but in my wiring diagram I have it listed as BAC. I seem to have gotten BAC from Josh's wiring diagram, but I don't know where he got it from. And I found another thread that suggests it's supposed to be ACB. <sigh> I can try changing the order tomorrow and see what happens.
Thanks again
-- Joe