[TRIK-56]

My HO305 in my 82 Elky started missing/cutting out today after it was warmed up and driven. Engine is out of an 88 Monte SS.
After getting home, shutting it down until it cooled off and restarting it , it ran fine UNTIL it got warmed up again and then it started doing the same thing again.
Any ideas what can make it run fine when cool but rough when warmed up?

 

[464elky]

Something in carb making it run too lean after the choke opens? What vacuum control sensors are still operational?

 

[TRIK-56]

I think all the sensors are still operational.

I was thinking it could be a ign. module going bad or possibly the coil since it doesn't start crapping out until it gets warmed up good.

Does this sound feasible?

I know they can test for a bad module at the parts store but do they have ways to test a coil thats off the car?

 

[zach01s]

coil is a good start. ive seen modules start to act funny as they go out, and ive also seen them just stop working out of the blue. if you have spare parts lying around, id start swapping them out one at a time till the problem is corrected.