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2000 Chevy blazer doesn't have a carburetor. It's multiport/sequential port fuel injected.
Your injectors look like a spider inside the intake manifold. If they are not delivering fuel, that assembly needs to be replaced.
That's a pretty big deal. Need to replace a few other gaskets as well since other components will be pulled.
Your '95 blazer does not have fuel injectors as such. Fuel delivery is accomplished by way of a " throttlebody" injection system. This unit is mistaken for a carbuerator but is systematically controlled through several electrical connections by the on board computer.
leaky injector/s is flooding motor, mechanically clean or replace. And clean throttle body while you are at it with spray cleaner. Should be almost spotless where large throttle valve opens and closes.
The Owner's Manual tells you to NEVER 'pump' the gas pedal, but to s l o w l y ease it to about halfway. Remember its electronically fuel injected, Ace. Sometimes on a hot day it gets overloaded and needs more air.
The cold start sequence involves turning on the switch, then allowing the fuel pump to build up proper pressure.
No carb. It more than likely has port injection, which is an injector for each cylinder. The older ones, (after carbs) had throttle body injection, that looked like a carburator, but had one or two injectors.
without the year of the vehicle it will be hard to solve. If fuel injected check to see if injectors are firing noid light will tell. Pull plugs, check for gas fouling/change if necessary(carbuerated same procedure). If check engine light on, pull codes, may indicate nature of problem. Common problem on s-10 with 4.3 is fuel distributor or cap and rotor. you may have fuel pressure in rail but not at injectors. Check for spark at plugs not at coil wire as distributor cap failure is common.
it use a voltec system,it has one inyector inside intake manifold and 6 yets from it,to each cylinder.its a continus fuel injection system,its a litter complicate to explain it.fuel pressure regulator is inside manifold too.