ROUGH IDLE POSSIBLE RUNNING LEAN

  • Tiny
  • pearlhickory
  • 1998 Chevrolet Camaro
  • 97 miles

98 Camaro Z-28, LS1 motor, 97k, auto. Vehicle starts up fine, has rough idle, pulled codes, #174 Bank 2 lean, # 300 Generic, multiple cylinder misfire, cars runs good, excellent pickup, but at an idle its very rough kinda like it wants to cut off but doesnt.
ANY ideas, would help thanks.

Tuesday, September 25th, 2012 AT 10:51 PM

5 Answers

  • Tiny
  • saturntech9
  • Expert
  • 28,254 posts

First thing I would check for is a vacuum leak from the symptoms sounds like you have one.

Was this
answer
helpful?
Yes
No
Tuesday, September 25th, 2012 AT 11:14 PM
  • Tiny
  • pearlhickory
  • Member

I was looking around the engine, bay, I CAN HEAR ONE, cannot locate, it, ive shot cab cleaner in area and stuck my head as much as possible put a pipe to listen thru it and cannot find, but I can can hear hissing.

Was this
answer
helpful?
Yes
No
Tuesday, September 25th, 2012 AT 11:20 PM
  • Tiny
  • saturntech9
  • Expert
  • 28,254 posts

Spray carb spray at idle and listen for the engine rpms to go up down or the engine to. Stumble or die.

Was this
answer
helpful?
Yes
No
Wednesday, September 26th, 2012 AT 12:00 AM
  • Tiny
  • pearlhickory
  • Member

I already did, I can hear a hissing from backside of motor cannot locate it. Looking for the pcv valve now.

Was this
answer
helpful?
Yes
No
Wednesday, September 26th, 2012 AT 12:50 AM
  • Tiny
  • saturntech9
  • Expert
  • 28,254 posts

Did you find the pcv yet?

Was this
answer
helpful?
Yes
No
Wednesday, September 26th, 2012 AT 3:58 PM

Please login or register to post a reply.

Similar Questions