Hey guy could use any help here I dont know what to do anymore.... I have a 95 Chevy Blazer CPI and a few weeks ago i was driving and it just cut out randomly. I had it towed home and let it sit for a bit when to check to see if it would start nothing. Did your regular checks. Checked fuel pressure and i even checked the volume to make sure that the pump was working i removed the fuel like from the outlet of the fuel pump and saw a ton of fuel pouring out so i know the volume of the fuel pump is good and then check pressure with my snap-on gauge and i have bout 59psi. i then check for spark no spark replaced the distributor car starts but is misfiring i get code p0300 so while im at it i replaced all the plugs and wires started the truck up same issue i then replaced the ignition control module same issue i replaced the crank sensor same issue i dropped the exhaust maybe thinking it may be plugged same issue it like the vehicle is running in retard no power misfiring and sounds horrible i really dont know what to do further any suggestions would be greatly appreciated or if u have any further questions please let me know im currently taking the bus cus i dont got my truck thanks

 

have you tried replacing the coil, just an idea

 

Brake out yea old fuel pressure gauge and see how far the pressure drops in ten min, key on engine off.
Stay away from the parts store for now, come back with what the gauge does.

 

diagnosis before throwing parts..... What brand ignition products did you use ?

have you changed the cap and rotor yet ?
Have you done a leak down test yet ?

P030x - Random/Multiple Cylinder Misfire Detected

Its a common code and it can lead to many things being wrong.


Edit: This shows you the proper way to diagnose the fuel system.
96+ Fuel System Diagnosis - Blazer Forum - Chevy Blazer Forums

 

His truck is a '95

 

Read the thread closely.

 

the fuel pressure is 58psi and after 10 mins is drops about 1 psi and i left the gauge on for bout 15mins and it maintains about 57 +/- 1 psi

 

Havent replaced the coil yet gonna try that on monday after work

 

i used Doorman ignition parts the cap and rotor were replaced with the distributor assembly. i have done a leak down test and all cylinders pass the compression is about 150 on all cylinders +/- 2psi i also replaced the FPR and same issue

 

thanks everyone for the ideas but im still stuck any information or ideas are greatly appreciated i miss my truck and i hate seeing it in the driveway please anyone HELP!! thanks