Mechanics

TRUCK TURNS OVER BUT WONT START AFTER DISCONNECTING THE BATTERY

1990 Chevrolet Silverado • 200 miles

It gets gas and seems to get weak spark. Replaced battery, coil, cap, wires, rotor, ign controle module, coolant temp sensor, idle control valve. After it sits for a few hours it will start but only after turning over for an extremely long time then starts runs rough and blows out black smoke "relearns" and then runs fine. Engine runs like new except after disconnecting battery.
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Meangene72
February 13, 2012.



So things were fine before replacing battery? What was reason for battery replacement?

Tiny
Fixitmr
Feb 13, 2012.