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Blazer Distributor Rotor Keeps Going Bad

Tiny
ABRANCH352
  • MEMBER
  • CHEVROLET BLAZER
I have a 1999 Chevy Blazer 2wd 4.3L automatic with 155K miles. It starts out running rough first thing in the am. After a few more weeks it get worse and acts up anytime of the day (worse in am). I can change the rotor and it will run perfect for 1 to 2 months. I have tried 3 different brands of rotors including OEM Chevrolet with no success. This problem started about 125k miles. I have had it tuned up, including distributor cap, wires and plugs. Any ideas? Thanks.
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Wednesday, October 10th, 2007 AT 11:27 AM

4 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Check the dist if ok
try a new cap and rotor

good luck
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Wednesday, October 10th, 2007 AT 9:45 PM
Tiny
ABRANCH352
  • MEMBER
  • 2 POSTS
Thanks for the reply.
I think I worded my question poorly. What I should have asked is what is causing the rotor to keep going bad? I have changed it 3 times with different brands and they all keep going bad. Thanks
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Thursday, October 11th, 2007 AT 8:05 AM
Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
There is a vent on the distributer that gets plugged up and may be casuing the problem.
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Friday, October 12th, 2007 AT 6:12 AM
Tiny
BAT KID
  • MEMBER
  • 40 POSTS
Where is the vent located on the distributor because my cap and rotor keep corroding
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Tuesday, April 12th, 2011 AT 3:05 PM

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