From: Joe Foley (redmenaced@yahoo.com)
Date: Fri Feb 04 2005 - 16:24:57 PST
High voltage is funny stuff, it has weird ways about
it. Just ask any Amateur Radio operator.
A cracked insulator will cause a weak spark or no
spark at all, on the other side of the argument, NO
ground connection, or a poor ground connection will
cause such to happen, too. By "ground" I mean return
path to the magneto, that being a poor connection
between the plug and the head of the cylinder, dirty
threads, oil is an INSULATOR. Also, carbon tracking,
or other impurities making a resistive path from the
center conductor to ground.
All of the above could happen to the wires, too. Run
the engine in a dark garage and see if you can spot
any arcing along the wires, connection, etc.
Joe
--- "Mil-Veh Co." <milveh@sbcglobal.net> wrote:
> I know a spark plug can actually look pretty and
> clean
> in good shape, but it still won't fire right and we
> call it a fouled plug...ok fair enough and let's
> skip
> the part about dirty electrodes, thats a given they
> won't fire right, but what possibly could happen
> internally that would make a plug not fire or fire
> weakly? How does that condition happen?
>
> One of lifes great mysteries for me.
>
> Also, can an M151 fire 180 degrees out of time?
> Just
> curious as I know some engines can, but won't run
> worth a diddly squat.
>
> Thanks in advance!!!!!
>
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