Blazer Distributor Rotor Keeps Going Bad

CHEVROLET BLAZER
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ABRANCH352
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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.
Oct 10, 2007 at 11:27 AM
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BMRFIXIT
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[quote:b42e060026="abranch352"]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.[/quote:b42e060026]


check the dist if ok
try a new cap and rotor

good luck
Oct 10, 2007 at 9:45 PM
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ABRANCH352
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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
Oct 11, 2007 at 8:05 AM
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SERVICE WRITER
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There is a vent on the distributer that gets plugged up and may be casuing the problem.
Oct 12, 2007 at 6:12 AM
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BAT KID
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where is the vent located on the distributor because my cap and rotor keep corroding
Apr 12, 2011 at 3:05 PM