MSD rust

Adger Smith · 10-26-2008, 08:17 AM

You mean Dist Cap?
Does it looks like Brown dust. A little is OK. A lot is not. It is caused by the spark arc creating Ozone. If a lot, check for high resistance in the coil wire first. Keep in mind that a coil wire is used 8 times as much as a plug wire(six time in my car :~)...) They usually go bad first. Then check the plug wires for high resistance. You could also have bad (high resistance) plugs. Quite a few plugs have built in resistance, one of those RF fixes. Too much gap or high resistance factor in a plug can cause the arc, too. A bad carbon contact in the cap will also cause it. That will show up as little welded looking spots (arcing) on the flexible part of the rotor. You might want to vent the cap to keep the air in the cap from being contaminated. Good luck.
Adger

10-26-2008, 08:17 AM	#2
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: MSD rust You mean Dist Cap? Does it looks like Brown dust. A little is OK. A lot is not. It is caused by the spark arc creating Ozone. If a lot, check for high resistance in the coil wire first. Keep in mind that a coil wire is used 8 times as much as a plug wire(six time in my car :~)...) They usually go bad first. Then check the plug wires for high resistance. You could also have bad (high resistance) plugs. Quite a few plugs have built in resistance, one of those RF fixes. Too much gap or high resistance factor in a plug can cause the arc, too. A bad carbon contact in the cap will also cause it. That will show up as little welded looking spots (arcing) on the flexible part of the rotor. You might want to vent the cap to keep the air in the cap from being contaminated. Good luck. Adger __________________ Adger Smith (Former SS) Last edited by Adger Smith; 10-26-2008 at 08:22 AM. Reason: sp