another thing to try is a little starting fluid in the intake... if it runs till the starting fluid is gone its a fuel issue..

 

ok well i tryed swaping the relays my asd relay is not even close to my horn relay but it is the same as the trailer system relay so i tryed that nothing changed and then tryed the horn relay with the fuel system one i just switched them still nothing and i fiuger my horn wouln't work if it was bad so i tryed my horn and it work like normal

 

CPS or CKP sensor might be the problem

 

Pull one spark plug, put the wire back on it,ground the threaded part to the frame somewhere and have somebody try to start it.Look at the plug and see if there's a spark.The darker it is outside or inside a garage, the easier it is to see a spark.Just make sure your clear of all the moving parts in there.This will narrow it down to an electrical or fuel problem.

 

sounds like my problem, Im about to check the crank position sensor.

 

ive had the asd relay kill my truck, and pulled it out tryed again, and nothing, then i tapped it a bit, put it back in then it started right up

 

i pulled the asd relay out and swithed with with my starter relay and still just the starter truning but no fire i switch out the fuel relay with my horn relay and everything works.obw idk if its because mine is older but my horn and asd arn't interchangable. so i belive its none of the relays

 

also it is geting fuel casue i can smell the gas in the exahust so its not geting spark whitch means its an eletrical promblem so dose that rule out the cps or just narrow it do more to that.

 

You don't just guess if you are getting a spark or not, do a spark test.
You are rambling a bit, can't tell if you have done it or not.

Yank a spark plug wire from a plug, stick a phillips screwdriver in it, have someone crank while holding the screwdriver close to the block - Goes without saying, you grip the plastic part, unless you like nasty jolts.
Alternatively, if no one is available to crank, position it in such a way that the screwdriver shaft is close to, but not touching, the block ,,, While observing it under the hood, while cranking.
Spark jumps from screwdriver to block, then you have a spark.

With all that cranking, you'll probably want to make sure the battery is charged, you can cause more damage cranking with a weak battery.

 

when my camshaft position sensor went out it threw a code and acted similar to the asd relay as far as not wanting to stay running at idle. advance can test it if you carry the sensor up there.
i'm not sure about how the ckp sensor will act when it's going out.