1990 Chev. PU
 

I have the v6 fuel inj. engine, It starts fine, but just recently it has started missing, Not really missing, but seems to be starving for fuel, it runs ok, but if you give it alot of gas it misses and backfires, seems to want to choke out. As long as you don't push real hard on gas pedal its OK, but when you want more gas it kinda stalls out, that BLAH sound. If I disconnect the electric choke, not much difference, I took carb. top off and cleaned it, no difference. when you give it gas, there is good fuel pressure as well. What could it B ???

RE: 1990 Chev. PU
 

what choke?????what year is this?

RE: 1990 Chev. PU
 

1990 is the year, on the side of carb. there is a connection with like 3 pins that lock in with a clip, thought these were connected as an electric choke??