burnt rotor

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Jan 17, 2010 | 06:03 PM

cap

Thread Starter

Newbie

Joined: Jan 2010

Posts: 4

Likes: 0

Model: Cherokee

burnt rotor

I have a 99 4.0 L that has burnt up two rotors in about 5000 mi. total mi. 132000. I have replaced plugs + coil any suggestions???

Jan 17, 2010 | 06:05 PM

1jeepman

Seasoned Member

Joined: Sep 2009

Posts: 332

Likes: 0

From: Williamsburg, Ky.

Year: 1999 Sport

Model: Cherokee

Engine: 4.0

Are you talking about the button in the distributor?

Jan 17, 2010 | 06:09 PM

patnok

Seasoned Member

Joined: Apr 2009

Posts: 330

Likes: 0

From: Nokomis FLA.

Year: 1992 2dr Sport 2wd & 1992 4dr Laredo 4x4

Model: Cherokee

Engine: 4.0 liter H.O.

maybe the bearings in the dist are bad

Jan 17, 2010 | 06:12 PM

mike albo

CF Veteran

Joined: Mar 2009

Posts: 8,712

Likes: 2

From: Loomis,California

Year: 1987

Model: Cherokee

Engine: 242 inline six

Check the magnets in the distributor also,change mine out yesterday made a huge differance.

Jan 17, 2010 | 06:23 PM

cap

Thread Starter

Newbie

Joined: Jan 2010

Posts: 4

Likes: 0

Model: Cherokee

Quote:

Originally Posted by 1jeepman

Are you talking about the button in the distributor?

yes the rotor button

Jan 17, 2010 | 11:18 PM

G_P

Senior Member

Joined: May 2009

Posts: 559

Likes: 0

From: Middlesex County CT

Year: 1993

Model: Cherokee

Engine: 4.0 H.O

Did you change the cap along with the rotor? could be a corroded/mangled contact in the cap causing arcing that is burning up the rotor.

Jan 18, 2010 | 08:16 AM

cap

Thread Starter

Newbie

Joined: Jan 2010

Posts: 4

Likes: 0

Model: Cherokee

I have changed rotor cap and coil ,I am thinking possible distributor problem or spark sensor if there is such a thing?? parts have been changed twice and still a problem!!

burnt rotor

burnt rotor

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