99 blazer 4.3l 172,000k died while driving showed no symptoms, no codes seams to be getting spark and gas but wont make a attempt to start

 

What is your fuel pressure? If you do not have at least 55 psi IT WILL NOT START. Test the pressure, and let us know. Also I have seen the cap/rotor, just up and fail like that, but still gets spark. Korey

 

Better check the fuel pressure first.

 

i checked the fuel pressure it goes up to around 62 or 63 and then drops to around 57 or 58, i also changed the distributer cap rotor button, wires, and fuel filter, willa blazer start with a prime( buy puting fuel in the throutlebody)

 

Is it getting spark to the plug?
When it died on you was there any chugging, hesitation, bogging?
When you try to start it, does it spin freely like normal or ?
Did you try holding it to the floor then crank it?
At any point of trying to restart it did you push down the peddle?
Oh and how much gas is in it? (1/4, 1/2, 1/3, full)

 

Any vehicle should start by putting fuel in the throttle body... won't run for very long, but, it'll start...

 

my blazer is on 1/2 i put that in just befour it happend , i am getting spark to the plug wire, i held my foot to the floor and cranked it no different , it sounds the same cranking it (pretty sure not timeing chan) i poured a prime in the throutlebody no difference and come to think about it there was a little chugga chugga happening befour it died

 

Check the injector fuses/relays...

 

Check your fuel system:
Lines
Connections
Fuses
Relays

Seeing as the Fuel Pump is within specs, hook up thefuel pressuretester again. Prime the system and then turn it off. Watch how long it takes to start to go down. Keep a log on this. This will help to trouble shoot it if its within the lines.

EDIT:
I had one that worked fine for a long time, but then suddenly it would just die. Took several hours before it would restart. Then did not show anything wrong for several weeks. Turned out to be the circut breaker fuse. Could not figured how it would radomly over heat and trip, but that is what it was. Put in a new one and no more problems for two years now.

 

i will go out at it agin and i will post my findings thanks guys for the responces they are actually keeping me sain