Ms sparks when switched in
Turbo Mini Forums

Actually it's a kdfi but to all intends and purposes it's an MS. when I switch it on it sparks two plugs. On a carburetted engine which has stopped running only shortly before this results in quite an explosion which seems undesirable. Any way to make it not do that?

Thanks as always:)

Arnoud

1963 Cooper
1975 Pick Up

This sounds like a good thread to read.

http://www.miataturbo.net/megasquirt-18/be...-circuit-33964/

If something is worth doing, it's worth doing half of.

This comes up time and time again on the MS-E forums.

Whilst the Miata article is technically correct as to the cause (CPU pins being high during boot up or re-flash) it simply isn't necissary to re-design the electronics - just follow the external wiring diagram correctly with respect to the fuel pump relay, main relay and coil (and injectors in most MS-E cases).
If followed correctly, the coil(s) cannot be charged until the CPU has booted and, once booted, not until the CPU instructs them to.

It may be that because you are on a carb you haven't appreciated the significance of the wiring or maybe kdfi forgot to "borrow" that part of the diagram.

EDIT - typo

Edited by Rod S on 3rd Jul, 2014.

Schrödinger's cat - so which one am I ???