well, I changed the fuel filter and still get rough idle, I needed to smog it, so with out fixing the idle I figured I would try..It passed, but the rough idle is pretty annoying...if I hit the gas it rev's up fine, and will hold a steady 2k RPM's...if i shut it off and start it back up, it sometimes won't start right away...my questions are..could the rough idle be caused by a kragan O'rielly dist. cap and rotor? the after market MFI Echlin spider assembly from NAPA? EGR solenoid or passage ? Fuel Pump? which was replaced about 2 years ago? I'm stumped

 

What brand cap & rotor did you install?