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Ignition misfire related to charge issue?
#1212295
04/08/12 12:31 PM
04/08/12 12:31 PM
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Joined: Feb 2009
Posts: 804 Houston, Texas
racerx20
OP
Standard but OK
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OP
Standard but OK
Joined: Feb 2009
Posts: 804
Houston, Texas
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Trying to work all the bugs out of my newly installed 408. In addition to the charge issue I also have a misfire (pops out the exhaust and breaks up) once the motor gets to approx 5K rpms. I was wondering if I am not getting enough voltage to the orange box if that could be a cause of the misfire?
Working through the weekend so trying to get ideas to start trouble shooting. Timing, fuel pressure under load(I have 9 lbs at the rail per the gauge at idle), igition are all on the list to check but was thinking that the two problems maybe related. Also going to poke around with the volt meter.
Thanks
1972 Road Runner
1988 Shelby CSX-T
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Re: Ignition misfire related to charge issue?
[Re: Dunnuck Racing]
#1212298
04/08/12 03:52 PM
04/08/12 03:52 PM
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Joined: Feb 2009
Posts: 804 Houston, Texas
racerx20
OP
Standard but OK
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OP
Standard but OK
Joined: Feb 2009
Posts: 804
Houston, Texas
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Using a mopar performance electronic dis and a Pertronix coil. Thanks for the info, time to do some checking.
Last edited by racerx20; 04/08/12 03:56 PM.
1972 Road Runner
1988 Shelby CSX-T
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Re: Ignition misfire related to charge issue?
[Re: racerx20]
#1212299
04/08/12 04:33 PM
04/08/12 04:33 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I'd check plugs/wires/rotor phasing/timing
live every 24 hour block of time like it's your last day on earth
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Re: Ignition misfire related to charge issue?
[Re: MoparforLife]
#1212301
04/10/12 09:30 PM
04/10/12 09:30 PM
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Joined: Jan 2005
Posts: 4,439 Michigan
MarkZ
Worthy
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Worthy
Joined: Jan 2005
Posts: 4,439
Michigan
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Is it a newer orange box? It sounds a lot like how my old orange box died. It started missing in the upper RPM range and eventually flat out died.
1987 Fifth Avenue - 512/518/D60
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Re: Ignition misfire related to charge issue?
[Re: racerx20]
#1212303
04/11/12 10:41 AM
04/11/12 10:41 AM
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Joined: Jan 2003
Posts: 10,010 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,010
Frostbitefalls MN (Rocky&Bullw...
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I have seen the stock wiring give guys headaches just like this. Try a separate circuit for the ignition system. Run nothing through the original harness and see what happens. Then try the box, then rotor , plugs, wires. start with a plug gap of .035.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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