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Sep 28, 2011 | 07:15 PM

sabre1981

Thread Starter

Racer

Joined: Apr 2008

Posts: 333

Likes: 0

From: Portage Michigan

Spark Issue

Last week I installed a new distributor, cap, and coil. Now there is a very audible spark from number 8. Pulling the wire off does not stop the spark and neither did using a different cap. If you put a mechanics' stethoscope to the base of the number 8 post you can hear it loud and clear. It seems to be beneath the cap and its only on number 8. Any ideas/suggestions for the cause?

Sep 28, 2011 | 08:25 PM

sly vette

Safety Car

Joined: Oct 2005

Posts: 3,570

Likes: 1

From: Algonac Michigan

Are you sure you have the dist. cap seated properly on the dist.?

Sep 28, 2011 | 08:54 PM

sabre1981

Thread Starter

Racer

Joined: Apr 2008

Posts: 333

Likes: 0

From: Portage Michigan

Quote:

Originally Posted by sly vette

Are you sure you have the dist. cap seated properly on the dist.?

Pretty sure. When it went on the car the cap had not been taken off since buying it (new) and then I put on another cap my neighbor had and it still had the spark.

Sep 28, 2011 | 09:13 PM

imariver

Drifting

Joined: Jul 2008

Posts: 1,873

Likes: 27

From: Sonora CA

Is the rotor seated properly? Check inside the cap for abnormal wear marks.
.

Sep 29, 2011 | 01:39 PM

sabre1981

Thread Starter

Racer

Joined: Apr 2008

Posts: 333

Likes: 0

From: Portage Michigan

Quote:

Originally Posted by imariver

Is the rotor seated properly? Check inside the cap for abnormal wear marks.
.

Pretty sure its seated right, no signs of abnormal wear. Stopped by my Corvette mechanic today and he loaned me a new coil to test out. Hopefully I will be able to switch them this evening.

Sep 29, 2011 | 08:08 PM

sabre1981

Thread Starter

Racer

Joined: Apr 2008

Posts: 333

Likes: 0

From: Portage Michigan

The coil my mechanic loaned me still has arcs, though it does it more sporadic, the one that came with the distributor was constant.

Oct 1, 2011 | 08:49 PM

sabre1981

Thread Starter

Racer

Joined: Apr 2008

Posts: 333

Likes: 0

From: Portage Michigan

Discovered this to be the culprit. Decided to put in the coil from the distributor I took out because I knew it wasn't sparking. Also put in the spring and rubber ring and started the car and no sparking. I then put the brand new coil back in and started it up again and still had no spark.