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High speed miss #118492 09/09/08 11:38 PM 09/09/08 11:38 PM
Joined: Feb 2003 Posts: 214 Hillsdale,Mi 69swinger340 OP enthusiast
69swinger340 OP enthusiast Joined: Feb 2003 Posts: 214 Hillsdale,Mi	I have developed a miss at high rpm's, starts popping through the exhaust at 4200-4500. Heres the combo 360, eddy heads, 650 holley double pumper, pertronix ignition, MP .528 solid lift cam. Motor is fresh about 250 miles on it. I thought I had a couple fouled plugs, replaced plugs, no change. Checked valve lash, all were still right on .017. Thought it may have been lack of fuel, swaped fuel pumps and tore carb down and cleaned all the passages out. Still no change. Any suggestions??? 69 swinger 340 4spd 70 T/A 340+6pk 4spd

Re: High speed miss [Re: 69swinger340] #118493 09/09/08 11:44 PM 09/09/08 11:44 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	plug wire went bad live every 24 hour block of time like it's your last day on earth

Re: High speed miss [Re: RapidRobert] #118494 09/09/08 11:52 PM 09/09/08 11:52 PM
Joined: Jul 2003 Posts: 12,129 Cleveland sunroofgtx I Live Here
sunroofgtx I Live Here Joined: Jul 2003 Posts: 12,129 Cleveland	Check the wires, particularly near the spark plug ends. Carefully try to pull off the 180 degree boots. Or, at least inspect each and every one. New plug wires are cheap insurance, anyway. Join the quickest team in motorsports. Team FireCore. CustomWiresets.com

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