Points to electronic on a 72
Thread Starter
Instructor
Joined: Feb 2009
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From: Greer SC
Points to electronic on a 72
The more I post on here the more I realize I don't know jack about my car. With that said I'll ask another question. I have purchased the Breakerless Ignition from Eckler's for my car. Since I have used it there is a constant miss fire. I rebuilt the engine at the time I bought the ignition so all of it is new. When I mean miss fire it's like a constant skip all the time at idle and through rpms. You can hold the gas steady and hear it miss and as you gradually increase rpms. Everyone has suggested going to MSD which I already have the box I have just yet to install it trying to determine if it really is the distributor. Attached to the coil at the positive are the black and white wires and the wire from the distributor goes to the negative. What are the two wire hooked to the positive? I have heard talk of a resistor wire is that the white one? Could that interfere with the electronic ignition? This forum has been a great help. Thank you again.
Le Mans Master
Joined: Jan 2006
Posts: 6,502
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From: Butler Pa
The orange wire is the resistor wire. Normally it's not used with electronic ignitions. What did the directions say that came with the ignition?
Did you verify which cylinder it is and whether or not it has spark? Are you sure you have the firing order correct?
I wouldn't be so quick to blame the ignition. There's a number of other simple things it could be.
Did you verify which cylinder it is and whether or not it has spark? Are you sure you have the firing order correct?
I wouldn't be so quick to blame the ignition. There's a number of other simple things it could be.
Thread Starter
Instructor
Joined: Feb 2009
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From: Greer SC
The directions are pretty much general. I don't think all cars would have had that resistor wire but I don't know. I checked all the plugs they all look the same. I have not removed each wire one by one while running but that may be an idea. I did however find that the coil I'm using has too low of an ohm rating. I am using the accel super stock 45,000 for electronic ignitions that has a primary ohm rating of 0.7 but the Breakerless website said not to run a coil with less than a 1.2 primary rate.
Team Owner
Joined: Jan 2006
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From: Crossville TN
Did the installation instructions tell you to use the existing wiring to feed power to the electronic module? Or did it tell you which terminal on that module was to get +12 vdc? If it is to get a full 12 vdc, you will have to bypass that resistor wire and run another wire from an IGN connector at the fuse block (+12 vdc when the ignition is turned "ON").
Thread Starter
Instructor
Joined: Feb 2009
Posts: 141
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From: Greer SC
After all the help I researched more and I found detailed instructions on the internet. I found that my coil had too low of an ohm resistance. Still fooling with the timing but haven't quite got there yet. Thanks guys.
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Race Director
Joined: Apr 1999
Posts: 11,520
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From: CORVETTE 77 385 C.I. TEXAS
... I have purchased the Breakerless Ignition from Eckler's for my car. Since I have used it there is a constant miss fire. I rebuilt the engine at the time I bought the ignition so all of it is new. When I mean miss fire it's like a constant skip all the time at idle and through rpms. You can hold the gas steady and hear it miss and as you gradually increase rpms. ...
This forum has been a great help. Thank you again.
This forum has been a great help. Thank you again.
Last edited by Ganey; Oct 19, 2009 at 07:34 AM. Reason: made more clear
Race Director
Joined: Jul 2001
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Race Director
Joined: Apr 1999
Posts: 11,520
Likes: 13
From: CORVETTE 77 385 C.I. TEXAS
2)
accel super stock 45,000 for electronic ignitions
3) I offered 3 possible solutions.
a) plug wires may not have been put back in correct order.
b) check 5 & 7 in particular.
c) spark plug wires may need replacing esp. if a higher energy system.
And you have a complaint.
I could have phrased it better.
Team Owner
Joined: Jan 2006
Posts: 37,637
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From: Crossville TN
M.Ward was indicating that if the coil and the stock supply feed wiring were not changed, the plug voltage would not be any higher than with the points in the system. To get full advantage of the electronic system, the coil needs to be changed and a direct 12 vdc line needs to feed it; then the plug wires [probably] need to change also, unless they are designed to handle the higher voltage produced. The coil, the coil supply voltage, and the gap on the spark plug determines the spark voltage that is produced.
Race Director
Joined: Apr 1999
Posts: 11,520
Likes: 13
From: CORVETTE 77 385 C.I. TEXAS
1 It was already made clear that a different coil was being used.
2 As you pointed out earlier, that had not been determined.
Originally Posted by 7T1vette
Did the installation instructions tell you to use the existing wiring to feed power to the electronic module? Or did it tell you which terminal on that module was to get +12 vdc?
Race Director
Joined: Jul 2001
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1) It was not stated it was a conversion.
2)
is not the stock coil.
3) I offered 3 possible solutions.
a) plug wires may not have been put back in correct order.
b) check 5 & 7 in particular.
c) spark plug wires may need replacing esp. if a higher energy system.
And you have a complaint.
I could have phrased it better.
2)
is not the stock coil.
3) I offered 3 possible solutions.
a) plug wires may not have been put back in correct order.
b) check 5 & 7 in particular.
c) spark plug wires may need replacing esp. if a higher energy system.
And you have a complaint.
I could have phrased it better.
1)my
2)statement
3)is
4)still
5)correct
6) Relax, enjoy.
