Inspection/emission problem

cre · 02-27-2010, 12:49 AM

EGR will cause high NOx, I don't think it's suspect here.

HC and CO are both due to running excessively rich. I would start with checking for diagnostic error codes, then check plugs, air filter and timing... then we'll move on to bigger things.

Check codes: http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx

Look in the MKIII FAQ for info on setting timing; You probably don't need to worry about the mechanical timing, just the spark advance.

02-27-2010, 12:49 AM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	EGR will cause high NOx, I don't think it's suspect here. HC and CO are both due to running excessively rich. I would start with checking for diagnostic error codes, then check plugs, air filter and timing... then we'll move on to bigger things. Check codes: http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx Look in the MKIII FAQ for info on setting timing; You probably don't need to worry about the mechanical timing, just the spark advance. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->