muffler?
September 29th, 2020, 10:49 AM
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muffler?
I have a '93 K-1500 4.3 no air pump new engine dist. all pollution control crap brand new, ran great for three years with glass pack installed regular muffler runs like crap. un plugged O2 sensor runs good, changed sensor, runs like crap, unplugged, runs good. Any advice would be great.
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