Firstfives.org

Posted: **Tue Jul 16, 2013 10:36 pm**

my 79 528i has a slight misfire at idle causing it to have high HC (260ppm, max allowed is 220)

car otherwise has a steady idle, good cap n rotor/wires.

just looking for some ideas of where i should start.

Posted: **Tue Jul 16, 2013 11:12 pm**

http://www.smogtips.com/failed-high-hydrocarbons-HC.cfm

Posted: **Wed Jul 17, 2013 12:49 am**

thank you, but i'm aware of the basics. i am hoping for something more specific to E12s with L-Jet.

Posted: **Sun Jul 21, 2013 12:04 am**

Is it a miss or a hunting idle? The latter is what it should be, not smooth. On a 528i if you have a miss it is probably a component problem, ignition parts. And you didn't mention what the biggest troubleshooting tool says, the O2 sensor.

Firstfives.org

misfire at idle, failing CA smog help

misfire at idle, failing CA smog help