tach signal drop & return

[Bills914-4]

Hello, I've been having an issue with my ms2xtra , while idling & running(cruise) & sometimes at wot (not good) the tach will drop to 0(zero) & bounce back causing a mis in the ignition firing , any ideas as to what would cause this , Thank You Bill D.

here's a video of it happening twice ( real quick in the begaining and about half way thru)

just click x on the white box (upper right corner) thank you again


https://www.dropbox.com/sc/c9c1h0sel8ba ... qFfJBLYEga

[thedrew]

are you loosing sync?

[Dale M.]

Cold solder joint or loose component on circuit board ?

Dale

[Bills914-4]

are you loosing sync?

Yes, I was finally able to make time and check , I hooked up the laptop and watched it , aparently when the tach signal drops
the RPM sync flashes from green to white or red and back to green , any thoughts , Thank you Bill D.