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Engine running rough.
I have a 96 blazer 4.3 It has been running very rough (spudders and sometimes backfires) when I eccellerate and loses power. Yet it idles just fine. Any idea what could be causing this? I have done plugs and wires and cap and rotor and cleaned MAFS and EGR
and the 02 sensors are less than a year old.One thing i think it may be from is my exhaust. I dont have a muffler. Can a lack of back pressure cause this problem? Any suggestions would be great.
Thanks!
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