93 full size K1500 (350, Automatic) turns over but will not start. 230K miles, and a lot of the ignition components have been replaced in the past year - plugs, wires, coil, ignition control module - and they all check out OK now. Is there a crankshaft (camshaft) position monitor on the vehicle? Is there another component that would cause a no start situation? It seems to be a no spark situation.

 

Additional information - the distributor turns properly. When I crank it over, the instrument gauges in the vehicle show that the oil pressure comes up, but there is no reading on the tach.

Any information would help. Thanks.

 

The is no crankshaft or camshaft position sensor on a 1993 Full Size Blazer. How are you sure that it is a no spark situation? Do you hear the fuel pump kick on when you turn the key?

 

Thanks for the crankshaft/camshaft information.
I have fuel in the line up to the throttle body, so I assume that the pump is working. I haven't actually tried to dump any fuel into the throttle body. I can try that.

 

THePaRaSITE5771 is correct. The problem is fuel related and not a no spark situation. I poured raw fuel into the throttle body and it fired up for a few seconds.
There is fuel in the line up to the throttle body, but there is no fuel being sent out from the injectors. I now need to find out how to troubleshoot the injector problem.

 

First of all, check fuel pressure to make sure the pump is ok. If the pump isn't putting out enough pressure, the engine obviously isn't going to be able to run without the correct amount of fuel pressure.

 

Be sure to check the Plug at the pigtail of the fuel pump.....I had the same problem and it was the plug....I just wired around it.
btw new here great forum so far....

 

It runs again. Sorry to take so long in getting back to the thread; I had a number of other problems to correct (not K-5 problems). I found a small hole in the fuel return line - near the fuel tank - and I believe that it was the cause of my problem. There was a very small fuel drip visible to see, but I believe that when the fuel volume got low (1/8 of a tank or less) that it caused a disruption in the fuel flow. The Blazer has been running fine since the line was repaired. Thanks to everyone for your help.