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NO SPARK
I just recently got a 1968 mustang coupe. It has the 289 v8. Car was running qhen i got it. I removed the points distributor to install a hei distributor. Now i can not figure out why i have no spark. The spark plug and wires are brand new. It has a new starter solenoid new battery. Ive installed 2 different hei distributors and still have no spark. The first distributor i installed the pick up coil was bad. I installed another distributor still no change. Ive gone through and tested the ignition module and even swapped the coil to verify its not those. Please help im at a complete loss. I do have the distributor hooked up via the relay method. Any and all help would be much appreciated thank you for your time.
 

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Welcome to VMF.


When you say "hei distributor" do you mean an electronic ignition distributor in general or do you specifically mean one of those huge ugly abominations with a GM module and a built-in coil?


If the points style distributor was working why get rid of it?
 

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Welcome.

Pics of your setup would be helpful.

+1 on clarification on thebtype of distributor


Sent from my iPhone using Tapatalk
 

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If the OP is run a huge ugly abominations with a GM module and a built-in coil, make sure the coil wire doesn't have a resistor inline, it needs a full 12V input. I run one of hose units, but it's Ford Blue.
 

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HEI No Spark

Make sure you run a fused relay so a full 12V is available.
Also make sure you have 12V to the relay during cranking. On your starter solenoid you have push on connectors. S is starter I is for the coil so you get a full 12V during cranking. Make sure that is connected to the relay input.

Go online & check the ohms on the coil, pickup coil & install another module.
Thats it, the HEI is very simple to diagnosis.
 

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By, HEI, if you mean the GM-Style "coil-in-cap" deal, run a jumper from the battery + to the distributor. If you don't have spark then either the lead from the side of the cap to the coil is broken, the pick-up or module or internal wiring is bad, or the distributor is improperly grounded (poor or no ground).
 
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