1996 Chevy Blazer 4.3 CSFI
When this Blazer has sat for more than about 30 minutes it will not start unless
I put about 1 tbls of gas into the plenum, once I bump the starter after that it will
START and run great all day, as long as it has not set for more than the 30 min.
Here is the list of things accomplished, not all related to trouble shooting;
Fuel pump (twice)
Fuel filter
Pick up coil
MAP sensor
Idle air control valve
Fuel pressure test will hold 55 psi over night
Fuel pressure will not drop with pump electricly disconnected and cranking
Snap on live diagnosis showed everything perfect while running