new to forum, i have a 96 blazer that I can spray one quick shot of carb cleaner to get it running, replaced gas,air filter,pcv. Remove and cleaned throttle body, still will not start on its own. Any ideas....Thanks

 

Does it stay running once you get it running via carb cleaner?

What do you mean you replaced gas? Any codes popping up on your dash? Any symptoms when it runs? (i.e. running rough, no power, etc)

 

replaced gas filter, and yes it runs normal after quick squirt of carb cleaner no codes

 

What is your fuel pressure? Have you done a pressure & leak down test (details can be found by clicking on the link found in the lower right of my signature below)? If you haven't done a fuel pressure & leak down test, please do so and report the specific pressure & leak down rate you observed.

From the sounds of things, you have a fuel system problem.