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1999 Chevrolet Blazer Repair Question


Topics covered: Coil wire, Distributor, Distributor cap.
Mileage: 153,000 miles.

Asked on February 4, 2013

Chevrolet Blazer Coil wire Problem

My 1999 chevy blazer with the 4.3l vortec v6 has cylinder 4 misfire. I have replaced the plugs, wires, rotor, and cap multiple times. The coil wire is arcing at the coil and distributor cap; which is what I believe is causing the misfire. What is causing the coil to arc? Is the arcing causing the misfire?
Avatar Asked by Chriscampbell96

Answer

Replied on February 4, 2013

Most likely that is causing the problem. Have you replaced the coil wire?

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided
Replied on February 4, 2013

Yes, I've replaced the coil wire every time I've replaced the wires.

Tiny Response from Chriscampbell96
2 questions asked
Replied on February 4, 2013

Is the coil cracked? Explain exactly where the arc is located.

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided

Replied on February 4, 2013

I have not found a crack in it the only thing I have found is that it moves a little bit on the mounting bracket. It's arching right where the wire connects to the coil and then where the other end of the wire connects to the distributor cap.

Tiny Response from Chriscampbell96
2 questions asked
Replied on February 4, 2013

Can you tighten the mount? Also, have you checked for cracks?

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided
Replied on February 4, 2013

The coil still has rivets in it from the factory holding it to the bracket. I have once but I'll go look it over again.

Tiny Response from Chriscampbell96
2 questions asked

Replied on February 4, 2013

Where is a crack in the coil most likely to be at?

Tiny Response from Chriscampbell96
2 questions asked
Replied on February 4, 2013

Near where the coil wire goes on. Is it arcing to the mount?

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided
Replied on February 4, 2013

I didn't find a crack but I guess there is always a possibility of a hairline crack. I don't believe it's arcing to the bracket but I can't check right now bc it's not dark outside

Tiny Response from Chriscampbell96
2 questions asked
Replied on February 4, 2013

let me know

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided