smoke coming out

maztah · Post by **maztah** » Mon Jun 05, 2006 9:45 pm

i've recently installed equipment like an idle up for the aircon to work. this causes the MAP to rise to around 55 to 60 kpa. but I notice visible smoke coming out of the muffler but my EGO sensor says that it is not that rich or lean. what could possibly be wrong?

maztah · Post by **maztah** » Mon Jun 05, 2006 9:59 pm

also there is always carbon residue on the spark plugs. my req fuel is 19ms and the idle pulse width ranges from 2 to 3ms. is that too rich?

keithmac · Post by **keithmac** » Mon Jun 05, 2006 11:16 pm

My hot idle pulsewidth is around 2ms, req-fuel 5.9 on 500cc/min injectors if that helps? Sooty plugs indicate a rich mixture.

maztah · Post by **maztah** » Tue Jun 06, 2006 2:03 am

would a lean mixture also produce a smoke?

jsmcortina · Post by **jsmcortina** » Tue Jun 06, 2006 3:02 am

No. Only a rich mixture will produce smoke.

James

shaodome · Post by **shaodome** » Tue Jun 06, 2006 4:42 am

Is it misfiring? If it is so rich that a misfire occurs, it will register as lean because the cylinder just pumps the oxygen through it and doesn't burn it up.