I have a 96 with 201000 miles. If the weather is in the 100's and I've driven 20 to 30 miles it won't start when I return to it. It wants to start but dies with the sound of vacuum air escaping. If I lift the hood and let the engine cool down in about 15 to 20 minutes it will start but run ruff for a few seconds. I have had the catalytic converter tested and its good. I have had the fuel filter and pump changed but it still happens. I am open for suggestions.
When the engine is hot it wants to start but won't on 1996 Chevrolet 1500 Pickup
it sounds like it could be an ign module when it wont start check for spark and fuel pressure