Question about 1991 Chevrolet S-10 Blazer

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

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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.

Posted on Feb 08, 2011

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Posted on Jan 02, 2017

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  • 124 Answers

SOURCE: I am trying to locate the fuel pump pressure test

it's on the fuel rail

Posted on Apr 10, 2009

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2 Answers

I have a 01 chevy blazer with a 4.3 vortec engine I want to no if a faulty fuel injector spider would cause low fuel pressure


low fuel pressure is from
bad pump,
blocked filter,
faulty pressure regulator
evap system not venting tank properly
leaking injector seals

Feb 13, 2017 | Cars & Trucks

1 Answer

Where is the fuel pressure regulator located on a 1996 Chevy Blazer with a 4.3 V6 engine?


The fuel pressure regulator is under the upper manifold assembly. disconect battery remove manifold release the fuel pressure, remove the fuel pressure regulator snap ring retainer the regulator assembly and the O-rings.

Jan 03, 2011 | 1996 Chevrolet Blazer

3 Answers

Strong gas smell and idles rough. did tune up. no


look at the fuel lines and injectors for signs of leakage.

Feb 14, 2010 | 1997 Chevrolet K1500

2 Answers

Fuel pump pressure specs


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

Sep 08, 2009 | 1991 Chevrolet S-10 Blazer

1 Answer

Fuel pressure regulator


Two places to look...if you have separate injectors for each cylinder then regulator should be at the front end of the fuel rail. If you have throttle body injection it is on the throttle body itself.

Jul 30, 2009 | 1997 Chevrolet Blazer

1 Answer

1997 Chevy Blazer wont start without starter fluid


Check fuel pressure it could be low regulator pressure

Jun 28, 2009 | 1997 Chevrolet 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

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