Starter Input?

[nemiro]

I have a MSII v3.0 board installed in a 1962 Triumph TR-3. We have the car running, and tuned halfway decently. The problem I have is at startup. The engine cranks several times before I see any activity on the LEDs. This is a very predictable amount of cranking, almost like it takes so many turns before the ECU recognizes that the engine it actually turning. Once I see activity on the LEDs, the engine fires up almost immediately.

I am using a 36-1 trigger wheel, and we have adjusted the hall effect sensor (custom sliding bracket) for a 0.0 degree offset. Like I said, once it starts, it runs pretty decently, but it takes more cranking than it seems like it should. I was wondering if there is an input anywhere on the DB37 connector to take in a signal from the starter relay to tell the unit that I am pushing the starter button? If not, can anyone take a look at my .msq file, and see if I have things setup incorrectly, which would lead to this? For configuration, this is a 121ci 4 cylinder, 4 stroke engine. I am running a single coil through a distributor, one injector per cylinder. Also running the GM style AIS, not that that should impact this.

Thanks for any help!

[trakkies]

How long after starting to crank to get get sync? This would show if it is a trigger problem. A log when starting might help.

MS knows when you are cranking by the tach signal. It will obviously be at lower rpm than when idling.

[nemiro]

I would say it turns over 8-10 times before it gets a sync. Once running, it seems fine. The number of cranks seems to be consistent. Makes no difference if it is hot or cold. I will record a log while starting this afternoon.

I attached a screen shot of the advanced ignition settings. I set the skip teeth to 18, since this is a 4 cylinder. However, if I set that to 9, implying an 8 cylinder, the number of cranks until sync get cut exactly in half. Of course it doesn't seem to run right there, either, but it starts a lot faster. Not sure if this helps in the diagnosis.

Advanced Ignition Settings.jpg

[nemiro]

Forgot to mention that this system is on the 2.886 code right now. I do plan to bring it up to the ms2extra_3.2.4_release firmware this evening.

[kholman]

Once you switch to MSExtra, your support needs to come on the MSExtra.com forum.

[nemiro]

OK. Have not made the change yet, and after reading a bit, not sure this is what I should do, anyway.