I have been reffering to this site for years without posting ,but I find myself in a situation with my 86 z28 that I must find a way to diagnose and repair the problem or give up the car."Not an option! "Love this car(if it's possible to love sheetmetal) Anyway I am plagued with the following symptoms:

*Code 33 (starts okay with cleard comp then stumbles at 1500-1800 and throws the code)
*Pig rich condition (fuel out exhaust)
*Fuel pressure while in spec during prime & running falls off rapidly after shutdown.Just had injectors serviced by Cruzin performance & new pump
* cooling fan runs all the time

I admit I have thrown parts at this ,but am ready to "mature" and do whatever is necessary to properly diagnose & repair this problem so If someone would either post some diagnostic instructions or refer me to a tpi book I can purchase I would appreciate it.