My brand new F-134 Hurricane Engine

[Deadguy]

after a day of driving, fails to start. It starts right up cold, and keeps going good through several stops, but at random intervals it just decides it won't start. The starter turns and turns, but no dice. It's not a heat issue either, it will start up and run all day, then I hit the store at night, come back out, and have to play with it for a good 30 minutes to get it to start up. I think the distributor, ignition wires, and coil is brand new as well. Any ideas? Maybe the spark plugs?

[dod03-52]

Sounds like fuel vapor lock. Starts good cold, drive a while, let sit for 10 minutes, the engine and hot weather boil the fuel out of the carb. Try to find non-oxyenaited fuel----no alcohol. Thats what I do when the temp goes 90 degrees plus.

[wesk]

[Deadguy]

well, it doesn't die when it's running down the street. It is only when i park it, go in a shop, come out, and sometimes it won't start. But there seems to be no rhyme or reason. When it's 100 degrees in the daytime in Austin, TX, it starts fine. Then 'm at the supermarket after dark, spend 30 minutes shopping, come out, and it won't start. The starter turns, the engine almost catches once or twice, and that's it. I go buy quick starter fluid, and it starts right up. I drive it home, let it sit, it starts up fine again.
I have heard, that the newer fuel is hard on older engines, and I should get a fuel stabilizer. The engine is either a very good rebuild. I am getting a new ignition coil, it won't hurt to have an extra (that has been my experience with my past two CJs), and I'm putting in new plugs. I'll check the gap on the points too, and pull out the timing light.
I bought it a few months ago, it had major frame and suspension problems, and has pretty much been getting worked on the whole time. It hasn't been driven that much, but it has had that problem with not starting from day one. I already put in new batteries. In a week or so, i'll change all the fluids-oil,antifreeze, all that.