I was checking out my plugs the other day and one of them had this bright blue corrosion in it and it was also all inside that plugs terminal (not sure if that is the right term) on the distributer cap.
So basically the blue **** was inside the boot of the plug and also in the terminal where the plug goes into on the distributer cap.

I want to get a set of NGK wires and was wondering if you guys recomend the blue ones in stock size (7mm) ?

I also want to pick up a set of NGK plugs because I am due for new ones and I was wondering if you guys recomend the V ones? (also stock specs?)

The last thing that I figure I'm going to have to replace is either the whole distributer or the distributer cap. If the blue corrosion got inside of one of the terminals on the distributer (the part where you put the plug into), would I need a whole new distributer or just the cap?

Thanks for the help. This is a first for me.

 

The blue shading might be from the usual temperatures and sparks. Go with OEM plugs and OEM wires. It's a plenty good ignition system.

 

It's only on one and it was a very large amount of it.
The other plugs were spotless....

 

Anyone ever heard of this happening?

 

The dizzie cap's ventilation might have become poor/blocked, which causes moisture retention and corrosion (that can also lead to the rotor becoming stuck on the shaft) and results in a very rough running of the engine when the corrosion interferes with transmission of current from the rotor arm.. -- Somebody posted that a certain truck has a ventilation problem in its distributor because of a small window with mesh that gets blocked by debris over time. Somebody else said that removing water and corrosion inside his civic's dizzie cap was becoming a weekly necessity. I realized that the dizzie cap I bought a few years ago for my Civic has stopped ventilating properly. It has a sort of 'chimney' with a special cap on it that allows some air to pass by not seating completely. I replaced that tiny cap with a 2" piece of plastic tube and hey presto, the car is running smoothly for 2 months (in a very damp winter) with no more removals of dizzie cap to clean the posts inside it. (Before, it would play up only a few days after a clean-up and the weather wasn't so bad.)

Where does the water come from? One explanation might be that it rises off the engine as it heats up and some finds its way toward the distributor and gets past its shaft seals if they are old? It seems to occur in various makes of vehicle so perhaps it happens when the car is parked after having warmed up. Then, as the engine and distributor cool down, water from cold, damp air in the environment condenses onto the metal surfaces, even under the dizzie cap?

p.s. I know this is "an old thread" (let sleeping dog's lie etc.) but people still do searches and get ideas from old threads, don't they?