AstinaGT Forums - View Single Post - 2003 323 Sp20 rough idle and carbon spitting exhaust

marcs_sp20 · 27-04-2015, 09:31 PM

Could be a number of things:

EGR Sensor
o2 Sensor
coils (even new ones can be bad straight from the box)

Also you said you changed from the an aftermarket intake back to the stock unit, check the rubber pipe that goes between the Throttle Body & MAF, they tend to crack at the flex bend.

27-04-2015, 09:31 PM	#3
marcs_sp20 Moderator Join Date: Oct 2005 Location: Ipswich, Queensland Car: 2002 Mazda Astina SP20 2006 Mazda 6 GY Wagon Posts: 9,769	Could be a number of things: EGR Sensor o2 Sensor coils (even new ones can be bad straight from the box) Also you said you changed from the an aftermarket intake back to the stock unit, check the rubber pipe that goes between the Throttle Body & MAF, they tend to crack at the flex bend. __________________