MS-1 fuel only w/ noisy tach signal, what can I do?

newstylecustoms · Post by **newstylecustoms** » Sun Apr 09, 2006 9:43 am

I am using MS-1 w EDIS mods not being used, ignition is a durspark system with a Jacob's Omnipak. I still have a horrible tach spike problem so it just won't run well at all. I have the tach lead from the Omnipak shielded and that doesn't seem to help. The Omnipak may be the problem since it is a coil and electronics in one box so it may not be possible to get a clean signal from it. Is there anything I can do to clean up the signal electronically?

I am thinking of trying a TFI setup, any thoughts or suggestions?

Bernard Fife · Post by **Bernard Fife** » Sun Apr 09, 2006 10:39 am

newstylecustoms,

You didn't tell us what main board version you have, but it is typical for EDIS use to remove the Dave cap. The Dave caps hels a lot to eliminate spike when triggering off the coil (which you may be doing).

For a V2.2 board, see step #2 here: http://www.megasquirt.info/v22manual/mwire.htm#ignition

For a V3 main board, make sure C30 is installed.

Lance.

newstylecustoms · Post by **newstylecustoms** » Mon Apr 10, 2006 10:42 am

It is version 2.2. Thanks for the assistance, I don't know how I missed that section when reading the manual.