Fordnatics List Archive

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Mail From: Shel Belinkoff <(email redacted)>


I'm going to be changing my plugs later this week, and I just wanted to
refresh my memory about the correct way to apply the dielectric grease.
My recollection tells me to put it around the inside of the spark plug
boot so that it forms a seal between the boot and the insulator. Is this
correct?

Shel Belinkoff
(email redacted)

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Mail From: chucko (Chuck Fry)

Date: Thu, 19 Jan 1995 10:04:15 -0800 (PST)
From: Shel Belinkoff <(email redacted)>

I'm going to be changing my plugs later this week, and I just wanted to
refresh my memory about the correct way to apply the dielectric grease.
My recollection tells me to put it around the inside of the spark plug
boot so that it forms a seal between the boot and the insulator. Is this
correct?

Yes, that's right. You should also apply some to the inside of the boot
at the distributor end, likewise on the coil wire, and around the base
of the distributor cap; in other words, anywhere moisture could intrude
between high voltage and ground.

On some cars, the makers recommend coating the non-contact surfaces of
the rotor with dielectric grease as well.

Try not to get any on surfaces that have to make electrical contact, in
particular either the center or the tip of the rotor. This will cause a
degraded spark and lots of radio noise.
-- Chuck

This read-only message was archived from a public mail list.
Mail From: (email redacted) (Michael C. Calanan)

chucko spake:

...edit info on applying...

>On some cars, the makers recommend coating the non-contact surfaces of
>the rotor with dielectric grease as well.
>
>Try not to get any on surfaces that have to make electrical contact, in
>particular either the center or the tip of the rotor. This will cause a
>degraded spark and lots of radio noise.
> -- Chuck
>
>------------------------------

Ah ha! Since I've changed my plugs, cap, and rotor I've notice
horrible engine whine. I figured I could be the stock wires - mabe moving
them aggrivated crosstalk - and was going to buy shielded ones. But,
maybe the problem was caused by this. One thing, the Haynes manual
and the containter that the grease came in instructed to apply the grease
to the inside of the boot, AND on the tip of the rotor. Could that be
the culprit?!?! And if so, how can I clean the tip and rotor correctly?

- mike
- (email redacted)