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Wahat would be the symptoms of a cracked Distributor cap??? and WHY ?
Posted by: wagbear ()
Date: December 13, 2010 05:35PM

Does it just crossfire like nutsoid? Why would a cracked cap even cause such???

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Re: Wahat would be the symptoms of a cracked Distributor cap??? and WHY ?
Posted by: Spectre ()
Date: December 13, 2010 05:58PM

Sometimes a cracked cap lets moisture in...than will cause crossfires.

David Clamp


1965 Corsa convertible - 140 4spd/3.55/AM-FM

2013 Mustang GT convertible - 5.0, 6spd auto

2003 Miata SE - 6spd manual (wife's toy)

"Victory is mine!" - SG

Warner Robins, GA (15 miles south of Macon)

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Re: Wahat would be the symptoms of a cracked Distributor cap??? and WHY ?
Posted by: John Luscinski ()
Date: December 13, 2010 06:01PM

Manufacture defect or a cap that was not seated correctly. Where did it actually break? Did it break at the ears were the screw downs are at? Or the rotor was off center not being concentric to the cap.

"Been there and done that! Well Not everything.smiling smiley
Member of Baystate Corvairs
61 Monza 2dr Coupe (For Sale)
65 500 2dr Coupe
63 Greenbrier

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Re: Wahat would be the symptoms of a cracked Distributor cap??? and WHY ?
Posted by: vairchet ()
Date: December 13, 2010 07:57PM

Misfires, backfires.... depends on location of crack and/or carbon tracking. A crack, dust or carbon can develop from center terminal and spread outward or it can spread between plug wire terminals.

I've discovered Accel and Blue Streak make the best distributor caps and rotors. Original AC-Delco would be second choice.

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Re: Wahat would be the symptoms of a cracked Distributor cap??? and WHY ?
Posted by: kenFL ()
Date: December 14, 2010 02:01PM

A lot of junk parts out there these days. A new cap I bought was cracked within a couple of months of use. The new rotor was significantly shorter at the contact tip than the old Delco one. Very high carbon tracks showed the rotor was barely aligned to the caps contacts.

As I said, a lot of junk parts out there. Now I try to get Delco stuff.

Ken 1963 Rampside
AKA: Cadillac Ken
[www.kidddarrins.com]

"If you aren't going to do it right, just don't do it" : My Dad, RIP

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Re: Wahat would be the symptoms of a cracked Distributor cap??? and WHY ?
Posted by: 66vairman ()
Date: December 14, 2010 03:49PM

Back in the 60's and 70's it was standard practice to replace the distributor cap and rotor when you changed the points.

While not common, cracked distributor caps happened and caused mis-fires.

The inside of an old points style distributor tends to get dirty from the points wearing out and of course there was grease for the cam. Any crack will gather this debris and form a conductive path for high voltage.

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Re: Wahat would be the symptoms of a cracked Distributor cap??? and WHY ?
Posted by: bubba ()
Date: December 14, 2010 04:48PM

66vairman Wrote:
-------------------------------------------------------
> Back in the 60's and 70's it was standard practice
> to replace the distributor cap and rotor when you
> changed the points.
>
> While not common, cracked distributor caps
> happened and caused mis-fires.
>
> The inside of an old points style distributor
> tends to get dirty from the points wearing out and
> of course there was grease for the cam. Any crack
> will gather this debris and form a conductive path
> for high voltage.

back in the day, dint caps and the rotor bug come as a set?

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Re: Wahat would be the symptoms of a cracked Distributor cap??? and WHY ?
Posted by: MattNall ()
Date: December 14, 2010 04:50PM

bubba only in the early "bubble-packs"

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Re: Wahat would be the symptoms of a cracked Distributor cap??? and WHY ?
Posted by: vesmcd ()
Date: December 14, 2010 04:54PM

Bubba, as I recall, points and rotor came as a set sometimes, with cap sepparate. As a matter of fact ,I still have a set(NON-vair) hanging on my shop wall.

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