Z ziggyturbo87 Member : 2003.5 mazdaspeed protege Sep 9, 2014 #1 I just got my msp back up and running and it run lean any ideas on how I can fix it
H hornsfan10609 Certified Mazda Tech : 2003.5 Mazdaspeed Protege x2 Sep 10, 2014 #2 Running lean as in the wideband gauge reads lean or you got a CEL for P0171? If you have a cel it's because of a vacuum leak.
Running lean as in the wideband gauge reads lean or you got a CEL for P0171? If you have a cel it's because of a vacuum leak.
