1993 4.3 lost spark

[Stingray1961]

I have been chasing many problems had most figured out set timing did not get enough total timing should be 25 to 29 only got 20 does the Module control that also now lost spark only 11 volts out of wire out of coil but if yiu wait an hour it come back then shuts off after 10 min any suggestions

 

[alldodge]

Could probably need a tad more info of what is going on, but could be the distributor module

 

[achris]

I had a similar (exactly the same) problem on one of my engines a few years ago. After a lot of troubleshooting it turned out to be a lack of a ground wire on the distributor body. That caused a high resistance in the ground circuit for the module, which caused a loss of reference for it and a loss of total advance.

Check your engine wiring harness, you should find an unused ground wire near the distributor. Take one of the module mounting screws out and hook the ground wire in to that.

Chris. .....