I have a 98 Blazer with a 4.3. I have fuel but no spark. I have changed the coil, coil wire, checked the crank sensor. I checked for spark at the coil but do not have spark there either, Any ideas what the problem may be? i'm stumped.

 

have you checked the cap and rotor?

 

I checked spark from coil to cap and there is no spark, was wondering about ignition control module that's mounted right beside coil?

 

Out of curiosity, how did you check the crank sensor?

Also, are there any codes set?

 

tested it with an ohm meter

 

I changed the ignition control module and that solved my problem. It is running fine now.