Idle Flare UP - Page 2 - ZR-1 Net Registry Forums

Paul Workman · 03-31-2010

The backfire, knock sensor, etc makes me think "LEAN". Could be as simple as a vacuum "leak" due to torque (lack thereof) on one of the gaskets. Just for fun, go 'round the plenum and check torque on the plenum bolts. If you find a loose one, then too then I'd think about re-torquing the IH bolts too, if the problem persists. (You did plug the IH coolant holes, didn't ya?) Oh, yeah...My brake booster hose caused that one time: got soft on one end, so I replaced it and idle settled down...Just a thought.

Are you sure it isn't just your tires slipping causing the run-up in rpm? (We've noticed you have a little problem getting traction...

But, who am I to say anything, huh???)

Did I mention it intermittently running LEAN?

P.

03-31-2010	#11
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,493	Re: Idle Flare UP The backfire, knock sensor, etc makes me think "LEAN". Could be as simple as a vacuum "leak" due to torque (lack thereof) on one of the gaskets. Just for fun, go 'round the plenum and check torque on the plenum bolts. If you find a loose one, then too then I'd think about re-torquing the IH bolts too, if the problem persists. (You did plug the IH coolant holes, didn't ya?) Oh, yeah...My brake booster hose caused that one time: got soft on one end, so I replaced it and idle settled down...Just a thought. Are you sure it isn't just your tires slipping causing the run-up in rpm? (We've noticed you have a little problem getting traction... But, who am I to say anything, huh???) Did I mention it intermittently running *LEAN? P. __________________ Good carz, good food, good friendz = the best of timez!* 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry