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post #1 of (permalink) Old 07-20-2003, 03:54 PM Thread Starter
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TR upgrade, Help, wont start

Alright, so I took my distributor out, installed the new one. Hooked up the new ignition module and the new coil. Turns over but wont fire. I have spark at the coil, but not at the spark plug wires. [img]images/graemlins/confused.gif[/img]

This is going into a 1975 304 so it's not a plug and play install.
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post #2 of (permalink) Old 07-20-2003, 04:05 PM
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Re: TR upgrade, Spark at coil but not at plugs

You didn't forget to put the rotor in did you??? [img]images/graemlins/confused.gif[/img] That should be the only thing between the coil and the plugs. You would not be the first to overlook this (but you might be one of the few to admit it [img]images/graemlins/blush.gif[/img] )
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post #3 of (permalink) Old 07-20-2003, 04:13 PM Thread Starter
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Re: TR upgrade, Spark at coil but not at plugs

I think it's all there. The distributor, the button (that thing that spins), a spacer, and the cap.
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post #4 of (permalink) Old 07-20-2003, 04:29 PM
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Re: TR upgrade, Spark at coil but not at plugs

I understand it's all there! but put in a new rotor (the thing that spins). and look at the inside of the cap for any carbon tracks or bad moulding lines. and if that doesn't work swap the leads to your coil primary side.
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post #5 of (permalink) Old 07-20-2003, 04:38 PM Thread Starter
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Re: TR upgrade, Spark at coil but not at plugs

it's all new stuff....all of it.....I had to make a wiring harness because that stuff dosen't plug into an older harness....... I'm guessing I didn't wire it correctly... ..the ignition module is hot to the touch..


Still has spark at the coil and none at the plug wire...the rotor is spinning....

??????????????????????????????????????
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post #6 of (permalink) Old 07-20-2003, 04:46 PM
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Re: TR upgrade, Spark at coil but not at plugs

Somehow I think that your rotor is not close enough to the center post on the cap. IF you have spark coming out of the coil wire the ROTOR is the only thing between it and the spark plug wires.

Humor me. take the cap off and measure the height that the rotor is off of the base (the part the cap rests on) of the distributor. Then measure the interior depth of the cap. There should be very little difference in these two measurements.
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post #7 of (permalink) Old 07-20-2003, 04:52 PM
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Re: TR upgrade, Spark at coil but not at plugs

Take the rotor off and look at the inside of it, where it slides on dis. shaft and look for any discoloration. if you see any replace it! if not swap the small wires on the coil terminals! If they are reversed the coil may still spark lightly but you increase the resistance in the whole cicuit tenfold! thus the hot module!
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post #8 of (permalink) Old 07-20-2003, 05:08 PM Thread Starter
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Re: TR upgrade, Spark at coil but not at plugs

OK, good call. I reversed the coil wires, way more spark at the coil, much cooler ignition module.

The measurements lead me to believe that I am falling just short of making a connection, after switching the wires I have a very light spark at the plug wires. Very light!

Is there suppose to be a spring under the rotor?
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post #9 of (permalink) Old 07-20-2003, 05:23 PM
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Re: TR upgrade, Spark at coil but not at plugs

The center button in the dist. cap may be spring loaded, or it will depend on the center contact of the rotor to keep presure on the contact. are the cap and rotor from the same manafacturer?
have fun and smile; it's a jeep thing!
gotta take the kids to MD'S. good luck...
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post #10 of (permalink) Old 07-20-2003, 06:10 PM Thread Starter
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Re: TR upgrade, Spark at coil but not at plugs

I'm getting a light spark at the plugs. My ignition module is too hot to hold on to, even if I switch the coil wires.

Did I wire it wrong????

Distributor-
Black to black w/ green in ig. mod
Black w/ red to orange in ig. mod
Violet w/ black to Violet in ig. mod

Ignition module-
Red to coil pos
Dark green to coil neg
White to power

anyone know anything about this?
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