Reply to "Wont start after a long "rest".."

FIRST, MAKE SURE YOU HAVE GAS IN THE TANK.

1. Make certain the vent on the gas tank works so that you don't have a vacuum condition in the tank preventing the flow of fuel.

2. Check and REPLACE your fuel filter (do this anyway). There's a fabric/nylon "sock" that originally covered the end of the pick up tube in the fuel tank and it's notorious for deteriorating and clogging fuel filters and lines.

3. Check/clean the integral fuel filter on your carburetor if you have a Holley carb (usually located inside the body where the fuel line enters). Check the Holley website for manuals or diagrams for your model to find the exact location.

4. Remove the fuel line from the fuel pump (elevate or plug to avoid spilling gas all over the floor); remove the gas cap; then carefully blow compressed air into the fuel line to make certain nothing is stuck in there blocking fuel flow; replace gas cap and reattach to fuel pump.

5. Clean the inside of the fuel tank. There are posts on this board and the DeTomaso Mail List about different methods of doing this, from using a drill driven pump to suck crap off the floor of the tank to removing the drain plug and spraying out the tank with water pressure to rinse all the debris out, then allowing it to dry before replacing the drain plug and refilling with clean fuel.

That's all I can think of at the moment.