2002 Toyota Corolla Rough idle

2002 TOYOTA COROLLA
196,000 MILES • 4 CYL • 2WD • AUTOMATIC
Avatar
DAVE1310
  • MEMBER
  • 64 POSTS
Idle is very rough at start up-after about 30 seconds it smooths out and runs great, I have a code PO302 which I know it is misfire cyl. 2. My question is could a misfire be caused by a faulty/sticky injector, and could this cause a rough idle and then the engine smooths out and runs fine?
Jan 6, 2015 at 6:27 PM
Advertisement
Avatar
WRENCHTECH
  • CERTIFIED EXPERT
  • 20,761 POSTS
Yes, that's an unlikely possibility. I would concentrate on the ignition components first.
Jan 6, 2015 at 6:42 PM
Avatar
DAVE1310
  • MEMBER
  • 64 POSTS
was that reply answer a typo since you said it is unlikely, but initially you said yes to the injector issue.
Jan 6, 2015 at 6:58 PM
Advertisement
Avatar
WRENCHTECH
  • CERTIFIED EXPERT
  • 20,761 POSTS
No, it wasn't a typo. I said yes, it is a possibility but would not be the first thing I suspected. You have to rule out ignition before suspecting fuel.
Jan 6, 2015 at 7:05 PM
Avatar
DAVE1310
  • MEMBER
  • 64 POSTS
thanks-I will do that first
Jan 6, 2015 at 7:10 PM