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-   -   #4 misfire (https://blazerforum.com/forum/engine-transmission-35/4-misfire-85727/)

wwilkjr 05-09-2014 10:12 PM

#4 misfire
 
1999 blazer 4.3l misfire on #4. Needs a new cat and o2 sensor #3. Any chance the misfire is due to bad plugs/wires/cap/rotor?


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