KentF
KentF New Reader
12/1/17 9:53 p.m.

The ignition coil on my V6 Mustang is designed so that it has one coil for every two plugs. When one plug fires at the right moment to light of its cylinder the counterpart plug also fires (but that cylinder is somewhere in its exhaust stroke).

This works well except the half the plugs fire with a positive charge and half fire with a negative charge. The terminals that get the positive charge (Cyl #1, 2, 3)corrode very quickly.

I assembled and crimped the MSD wires in the photo just six months ago and the copper clips have entirely rotted away. The plugs for wires 4, 5, 6 are fine. Note, The OEM wires has stainless clips on them. I have been looking but have not found any. I have tried electrolyte grease to no avail.

Thoughts?

bentwrench
bentwrench Dork
12/1/17 10:24 p.m.

There is this spooge called Silicone Dilectric Grease.

Your Ford manual will likely tell you to use it on the plug boots and such.

The0retical
The0retical SuperDork
12/1/17 11:30 p.m.
bentwrench said:

There is this spooge called Silicone Dilectric Grease.

Your Ford manual will likely tell you to use it on the plug boots and such.

It also goes by the trade name DC-4. Are you sure you got enough in there? That stuff isn't a "dab'll do ya" you really want to smash it in there. Pressure will displace it and the thin film left over won't affect anything.

Also your coil pack isn't arcing is it? If it is it can cause the silicon grease to break down, turn into to silicon carbide, and really mess things up.

The picture looks like straight up corrosion so my inclination is to say that not enough dielectric grease was used.

KentF
KentF New Reader
12/11/17 4:58 p.m.

Thanks for the tips. That is what i will do.

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