Haltech/igniton issues,combat together to make one BIG issue.

Phil Lamovie phil at injec.com
Tue Feb 27 11:23:48 GMT 2001



Hi list and kris,

It sounds like a self diagnosing problem to me.

Haltech reads coil neg. Haltech reads OK up to X pounds
of boost at X deg C. If Haltech reads RPM incorrectly but
high then perhaps you have a double firing coil.

If the coil double fires and then the Haltech double fuels this
would seem a reasonable source of "falling on it's face" as
a 6.5:1 AFR is pretty incombustible.

I would expect a total loss of power.

First spark at high boost is not draining the coil to the point
where it can not fire again. As the combustion pressure drops
say 40 to 50 degrees ATDC the coil voltage build up together with the
conductive soot caused by the incomplete combustion and resparks.

This is of little use combustion wise but may well be quite readable
as far as the Haltech is concerned.

When the Haltech techo said that "it's your leads" he was possibly
up to one third correct. This by the way is way higher than you would
expect.  Plug gap is very important, lead inductance and resistance
also,
as well as coil inductance. Rotor button & cap if applicable.

As the spark has to cross all boundaries simultaneously they are
cumulative issues where any item failing causes a system failure.

Best test is regap plugs less 30% and evaluate.

HTH

phil


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