You don't need to replace the injectors. Drain the fuel tank. Reinstall. Put in fresh fuel, and water treatment.
You can not see them until you remove the plastic upper intake / Plenuem Then you will see small little plastic lines that come off of them, Mechanics call that the spider. There will be 4 injectors on each side of the spider center body./ injector housing.
It is in the gas tank, you will have to remove fuel tank to service the pump.
sound like you have a 4.3 vortec with a bad spider. it is multiported so inside the plentum of the intake, there is your spider, they go bad and fill up your intake with fuel, then dump it down the valley of the engine.
Keeping the plug wire out of the way, Start the engine. In a few minutes the engine pressure should push out the porcelain center from the plug. At this point you can use a tool called an easy out to remove the threaded part of the plug.
I bought a 95 S10 Blazer w/ L35 Vortec and put a 92 4.3 Vortec into it. The blocks a mostly the same. the timing cover flange is different then the 92 or 93 vortec. If u use a block older the a 95 then Put a lot of RTV around the bolt holes on the cover-to-block mating surface. The heads are also different. There is one hole, a knock or coolant sensor, in the 94 and older heads. In 95 the Drivers side has 2 sensors, I coolant and 1 knock sonsor. The 94 and older engine had the knock sensor at the back of the head on the block. In 95 the passangers side head didn't have any major changes. The 95 S10 Blazer(compared to the 92 S10 Blazer has different: timing cover w/ crack sensor, distributor with cam sensor (non HEI-style), 2-sensor holes in drivers side head, Slightly different lower and upper intake. Lower intake has a pin that a distrubutor postitioning arm, It keeps the distributor locked into a certain position. and the upper intake has a bigger hole for the IAC valve's plunger. don't use an older IAC valve from an older 4.3 Vortec, There different. If you can us a block out of a 96 and switch everything else to the 96 block. The 96 has reinforcing ribs from the water pump to the lower corner of the block on both sides. My 95 Blazer runs really nice with the 92 block and rebuilt 95 heads on it. At least until it stalls. The thing warms up and then stalls. I cant find the problem. I have replaces Cap, Rotor, Plug, Wires, Coil pak, Fuel pump, Crank sensor, Both drivers and passengers side Knock sensors, both Coolant sonsors (side drivers head and lower intake sensor). Put a 92 Egr valve on it not the same autozone part#, but it didnt affect the way the engine runs, if anything ran better with the 92 on it( it was cleaner).
Vortec is the motors name in the blazer and it is a great motor
There is a fuel diagram for a 94-95 Chevy Blazer with a CPI 4.3 Vortec engine in the service manual. It shows the path the fuel travels from the fuel tank all the way to the injectors.
how to change a oil sending unit on a Chevy vortec v 6
you would need to change the cylinder heads also.See link below
crank it till starts
It is located under the upper intake manifold. It is connected to the bank of fuel injectors (poppets) bank.
how many fuel injectors in a 2003 4.3 v6 vortec x code
The plugs run down the center of the engine under the coils. You can see the coils after you remove the resonator (Thing that says Vortec 4200)
how to change the fan belt on a 1995 Chevy blazer vortec motor?
It is inside of the engine oil pan. You will have to remove the oil pan to get to it.
On the Vortec the computer does it all.
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