Question about 1991 Chevrolet S-10 Blazer

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Fuel pump pressure specs

I need to know the fuel pump pressure specs for a 1991 chevy s 10 blazer with a 4.3l vortec v-6

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The fuel pump specs are 14 psi. and 20 gallons an hour.

Posted on Sep 08, 2009

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Ineed to know the fuel pressure for a 1995 Chevy Pickup

Posted on Mar 25, 2011

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Our fuel pump stopped working on our 98 Chevy Blazer V6 4.3L Vortec Engine, so we bought a new one. A couple days later (before replacing the fuel pump) it started up and ran but ran crappy. So we did


what did you do (replace it) if you still have a miss you may need to tune it up / make sure the fuel pump you bought is for the right psi for your blazer

Mar 27, 2013 | 1998 Chevrolet Blazer

1 Answer

What are the psi specs for a 99 chevy blazer. 4.3 vortec


If you mean fuel pump pressure, should be 60psi or more.

Dec 06, 2012 | Chevrolet Blazer Cars & Trucks

1 Answer

My 1995 Chevy Blazer will stall out only after it get warm. I recently replaced the fuel pump due to a cracked fuel line. I replaced the fuel filter as well. What else could be causing it to stall out?


Could be a vac leak or a problem with the EGR valve among other things. Fuel pressure regulator comes to mind too.
If you did not use a GM pump I would recheck your fuel pressure.
If you have the vortec engine it takes at least 65psi of fuel pressure to make it run.

Sep 29, 2012 | 1995 Chevrolet S-10 CA Edition

1 Answer

94 4DR CHEVY TRUCK BLAZER S-10 4.3L V6 ENGINE NEED TO KNOW THE RIGHT MODEL/NAME OF GAS PUMP MY TRUCK USES PLEASE ! ? !


when ordering fuel pump, need to know the vin letter w or z. one is for a carb and the other is for a injection or vortec engine. one puts out 11psi and the other puts out 60psi. is this an in tank fuel pump?

Nov 12, 2010 | 1994 Chevrolet S-10 Blazer

1 Answer

Where is the fuel pressure regulator located on a 1997 chevy blazer 4x4 4.3 vortec?


it is attached to the fuel injection spider unit under the upper intake. check it out at helpwrench.com. look under the how to section for vortec there, you will see it then.

Nov 06, 2010 | 1991 Chevrolet S-10 Blazer

1 Answer

'94 S 10 Blazer V6 Vortec EFI. Fuel pressure good, new fuel injectors installed, fuel pump works ok. Only starts with starter fluid sprayed into air intake. Any Suggestions?


your statement is fuel pump work ok, have you tested for proper fuel pressure. just because the fuel pump works it could have less pressure needed to start the engine. maybe the fuel filter is plugged. start out by replacing the fuel filter, if this doesn't fix it, you need to pressure test the pump. even 10 psi reduction in pressure will allow the engine not to start.

Nov 03, 2009 | 1994 Chevrolet S-10 Blazer

1 Answer

1999 chevy blazer wont start


THE FUEL PUMP IS BAD.

if your losing fuel pressure after the pump runs the drain back valve in the pump has failed.

and i doubt that you are seeing enough fuel pressure to run a vortec engine.

low fuel pressure equals a non running vortec

Apr 11, 2009 | 1999 Chevrolet Blazer

1 Answer

I need info on how to replace the fuel pressure regulator on my 1994 chevy s10 blazer 4.3 vortec


Replace with Standard Part # FS503 about $300...complete new unit with all you need but plunium gasket worked wonders for my blazer now gets about 19 mpg

Mar 03, 2009 | 1994 Chevrolet S-10 Blazer

1 Answer

Where is fuel relay


The fuel pump relay is only for the fuel pump priming when you turn on the key. After the vehicle starts the oil pressure switch takes over and runs the pump. If the pump is shutting off after the motor is running the oil pressure swith is probably bad. Let me know if i can help you further.

Dec 27, 2008 | 1994 Chevrolet S-10 Blazer

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