MicroSquirt.com read only forum (Jan.15,2018)

Well today we could not really get it idling because the battery is shot. So hopefully tomorrow we will get a battery and have an update.

Thanks

With it at 180 degree offset angle (which it should be), Cylinder two does not combust (the spark plug is clean and smells like unburnt fuel) while the cylinder one spark plug is black and smells like burnt fuel.

I will clean off some spark plugs today and put them in so we can see the result ...

I was wondering how the second ignition input works. In our case we have it as a one tooth halls effect cam sensor. When the tooth is being read by the sensor, cylinder one is at the beginning of the intake cycle while cylinder two is at the beginning of the exhaust cycle. My question is, how is ...

Sorry for being late, but we set the cranking rpm to 50. We then saw if we got spark and fuel and we still did when it was cranking.

I attached the msq file that was used during that datalog and also geoffct's from an earlier thread.

Thanks again

Thanks, I will try this today and post the results.

Well I am back, and we have still not figured out whats wrong. We tried to test the timing on this engine, and it seems to be nearly impossible. We tried using a timing light with a peak hole on the timing wheel that shows when the engine is at tdc and it is pretty much impossible to tell due to the ...

I forgot to mention this before, but our engine is odd firing in which cylinder two fires 180 degrees after cylinder one.

Sorry heres the picture

Hey Guys,

We checked the ignition drivers today, and they do not get hot. Both coils are producing spark when we take them out of the head. We put brand new plugs in, and after two trials of 30 seconds runs at round 2000rpm the cylinder one plug was black and the cylinder 2 plug was clean which ...

You have found the problem - one cylinder is not sparking and its not the coil or plug. That leaves 2 possibilities - one of the ignition drivers is bad or the odd angle/ cylinder offset is incorrect. Your msq is showing an odd-fire angle of +180 deg, which says that cylinder 2 fires 180 deg ...