1969 c10 hei no spark help
 

ok so im back ... my poor 69 wont fire it was fine 2 weeks ago. its a inline 250 with HEI i took the coil out and put a meter on it both the primary and secondary coil ar good. i have power going to the cap. ran i hot wire right to it from the batt just to make sure. wtf is going on. what should i check next . took a plug out had my gf turn the truck over as i grounded the threads no spark. what is going on? please please help me . i want back in my truck .

Re: 1969 c10 hei no spark help
 

Sounds like the control module went out. When they go out it's done. It sits under the internal coil inside the dizzy.


http://folk.uio.no/olafla/HEI-stuff/hei_pic.gif

Re: 1969 c10 hei no spark help
 

I think you can get a module tested at Autozone and if it's bad replace it with a GM Delco
module. Since you have power at the BATT terminal and the coil tests good you may also have a bad pickup in the distributor or the button in the cap might be bad.

HEI modules do not like external voltage regulators because they can generate voltage spikes that can fry the modules. The Delco modules are more resistant to spikes and last longer.

Re: 1969 c10 hei no spark help
 

Just for your info .

https://www.ebay.com/itm/CHEVY-INLIN...item4d4513e0a4

These are obviously off shore but a lot of the members here have bought them with good results and they stand behind them.