My car will start just fine if cold or if it has only set for a couple of minutes but if it has been more than about 20 mins or so it won't start on all cylinders. I have changed the distributor cap to a new mad cap with brass pins and button, new plugs and wires as well. The car was also Ananda 350 swap when I bought it and I upgrades to injectors and chop to fit the engine as it was running on 305 injectors and dang chip. No other upgrades. Not sure what my problem is ansndsndt his point.

 

ICM can act up when hot when going bad

 

I didn't think of that. What threw me off is it would only do it when it had set for a few minutes after being shut off. I'll try replacing the ICM and see if that helps.

 

The symptoms sound a bit like injector leakage. It might be useful to monitor fuel pressure while running and after shutdown.

 

it should take 8 min or more for pressure bleed down back to the tank.

 

I'll look into the pressure as well. The injectors and seals are only around 2-3 months old so I hope it isn't them givingredients me trouble. I've had previously ICM issues before too and when I replaced the distributor cap I noticed the tips were pretty badly corroded. At this point it sounds like it's either leaky injectors or could be the ICM started to fry itself from struggling to supply spark through the corroded tips. I'll look into both.