Starts fine when cold wont start hot

SOURCE: 1997 BMW M3 3.2 EVO

Your fuel injection pressure is probably leaking down causing gasoline to leak into the cylinders and resulting in a hard hot starting condition due to "flooding" of the engine. Try holding the accelerator pedal all the way to the floor of the car like your trying to go maximum speed down the highway and crank the engine for 10 seconds or less at a time. That tells your computer to enter the "clear flood" mode and stop injecting gas into the engine. Ask your repair shop to measure the fuel pressure and see if the pressure is bleeding off too rapidly.

SOURCE: electrical. wont re-start unless cold.

You probably have some corrosion on your battery terminals. Make sure they are clean and connected good and tight.

SOURCE: after driveing 1 mile frome cold start van just revs but wont accelerate

Check in your radiator if you don't have transmission fluid in it. And pull the tranny dip stick to see if you don't have water or foam on it. There is a tranny cooler coil inside the radiator to help keep the tranny oil cool. You may have this leaking into the water, if this is the case and you don't take care of it fast it will ruin the tranny too.
I hope this helps.
Sam

SOURCE: 89 camaro z28 starts fine in morning(when cold).

ignition coil bad

SOURCE: 1997 dodge ram wont start hot

What is the condition of the starter ? Is this an engine hard to turn over problem when hot ? If so, the starter might be grounding out, this happens only when the casing is hot.