Will not start

Stupid question, but how do I go about doing that?

Well, while doing the tests you mentioned, we noticed that when cranking the engine, the rotor does not move, time gear belt busted?

Four cylinder two wheel drive manual.

I did a head gasket now it will not run. I have spark and fuel.

How can I make sure that the timing is set right?

After I replace the belt what are the timing positions for the crank and drive shaft?

Where is the crank mark supposed be is the key on the crank?

Thanks got it running, but still runs a little rough. How can I adjust it so it runs smooth? Plugs and plug wires are new, spark plugs are gaped properly, new igniter and coil and distributor and rotor. Was timed digitally, so anything else I can do?

Once a day, maybe twice but mostly first starting after it has sat for a while the truck will not start. No cranking, no nothing. Then once I turn the key off and try again it starts fine and the problem will not duplicate again for a while. Does not seem like a loose connection kind of issue. Was thinking starter relay or safety switch? Maybe solenoid?

156,000 miles and standard transmission. Lately the truck has not been starting very well. When I got to start the truck all I hear is a click. After trying the ignition multiple times and depressing the gas pedal the truck will finally start. I had the battery and alternator checked and they are fine and the truck runs great once it gets going, so I am kind of at a loss as to what the problem is. Any help would be greatly appreciated.

I replaced the starter and the truck ran great for about a month. Now the truck engine will turn over but not start. Any thoughts?