So I bought a 2000 blazer 4x4 and it cranks great first start up of the day but if it hasnt been sitting long it take a good 15-30 seconds to start. I've changed plugs and wires, distributor rotor and cap, and also the coil pack. Whats the best to go about this. Thanks in advance.

 

If it finally starts when hot, do you have fumes from the exhaust (mostly greyish) which could indicate a fat condition of the fuel system.

Temp sensor?

 

Hard to crank with a hot engine can often be a failing ICM (ignition control module).

 

so i replaced the fuel pump relay that my buddy had laying around brand new. and she starts every time to problem. was just trying cheapest thing first. thanks for your input though. ill be sure to check those if it comes up again.