I have a 95 4 door blazer with the 4.3l v6 and 4wal ABS and am having a few problems that maybe someone here can help me with

1.I gave the truck a full tune up,plugs,wires,cap.rotor fuel filteretc....and I am still getting a p0300 random multiple misfire when the engine is cold,and there is also black fuel smoke during this time and I get a system running rich,bank 1 code also this goes away once the engine has warmed up,I am guessing this will be due to a shot FPR,hopefully not the fuel spider.

2.The ABS light is is on,However I think I know why but I need a wiring diagram if someone has one as this blazer was involved in a front end collison before I bought it and I am missing the +12 ignition to the 3-pin large connector on the EBCM,I have the +12v battery voltage though.I suspect a broken wire somewhere.

Thanks in advance for any help

 

bump

 

UPDATE,
I replaced thespider/FPR,andlines2 years ago so it wasnt leaking,I removed the plenum and verified this as there was no evidence of fuel leakage or any leakage when I turned the ignition on.So I figured it was an igntion problem,since the cap,rotor,wires,and plugs were new I suspected the ignition coil/igniton module even though there were no DTC's set.Upon inspection of the igniton coil I found it was cracked on the back sideand it tested bad with an ohmmeter.After replacing it all is fine again,I guess the coil wasn't firing every time and when it did the spark was weak.

 

Thanks for the update and letting us know what it was...might help someone down the road!