I have a 99 2500 just bougt a month ago with 165k on it , i changed the exhaust turbo housing air filter and put an edge box on it. also air ride susp.
last week it i went to fire it up and it wouldnt crank and after getting mad with it i shot it with either and it fired right up and ran fine.
i have checked all fuel lines for leaks and it has a new lift pump what could it be not letting it start??
i have also changed the crank sensor but it didnt do any good. like i said when you shoot a little either in it it runs fine.
can some on give me some insight on what it might could be??????

BUY THE WAY HELLO EVERYBODY , FROM NORTH CAROLINA!!!