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1994 Chevy Blazer S10 : Running to rich..keeps flooding. Have already replaced fuel pressure regulator and computer.

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  • Chevrolet Master
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One or more of your injectors are open and dumping gas in the cylinders, have them tested?

Posted on Apr 08, 2011

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1994 Blazer 4.3 keeps stalling out running rich smells like gas


Leaking fuel pressure regulator , or leaking injector's ,depends on injection system . ! it's only running rich on right bank. whatever that means . Your vehicle is a v - 6 has two banks . right side of the engine an left side of the engine . Bank 1 is where #1 spark plug is . bank 1 is odd numbers 1-3-5 Bank 2 is even firing #'s 2-4-6 . What fuel injection system does it have ?
Your best bet mite be to take your vehicle to a qualified repair shop.

Oct 05, 2017 | 1994 Chevrolet S-10 Blazer

1 Answer

1995 chevy s10 blazer not holding fuel preasure when not running


The pressure regulator is in the intake manifold when they go bad it either give low pressure or leak out affecting engine performance by burning rich(black smoke)

Mar 01, 2012 | Cars & Trucks

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I have a 94 chevy s10 blazer. It has the 4.3L Vortec. When i get in traffic or if i leave my truck running without moving for any period of time it starts flooding itself out and sputters. When it starts...


What it is is that the engine is running rich, check MAP sensor acts like a choke, make sure vacum hose is good and that it has vacum if ok you'll need to check injector's or the fuel pressure regulator or the fuel line for leaking fuel, the bad thing is that to get to these part's you will have to remove the in-take magifold , after removal of in-take have some one turn key to the on position and look for fuel leak's.

Mar 30, 2010 | 1994 Chevrolet S-10 Blazer

1 Answer

My 1994 blazer is running very rich.black smoke is comming out of the exhaust.it runs good at a higher idel.i replaced many sensors already,


Most likely the fuel pressure regulator and injector spyder,under the intake manifold. You can get rebuilt ones. Look on internet for info,on the system.

Mar 11, 2010 | 1994 Chevrolet S-10 Blazer

1 Answer

1994 chevy s10 fuel problem


If you having fuel flow problem, 1st check the fuel pump make sure is has a good pressure, 2nd check the crank sensors, 3rd common problems on 2.2l injectors which it has only one can be faulty or clog. 4th check fuel regulator, if the regulator is bad it wont keep the pressure build up and lock allowing the injector to work correctly. if your fuel pump is good, your crank sensor may also be going bad, what crank sensor does it it sense the flywheel turning and it send single to ECU (computer) telling it to turn on the pump and keep it running as long as the flywheel keep turning. If pump, crank sensor,regulator and injector are good, my next guess is to have your ECU bench tested. if you have to replace ECU, get it from the junk yard.

Sep 12, 2009 | 1994 Chevrolet S-10

2 Answers

1994 chevy s10 blazer turns over, won't start


try replacing the fuel regulator,or is the oil cap on tight?the fuel regulator works on base vacumm

Sep 05, 2009 | 1994 Chevrolet S-10 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

Have a 1994 blazer, was acting like not getting gas, and some times acts like it is flooding. Have changed the fuel filter, it was dirty. It is still doing the same thing.


Hello;
Test the fuel pressure. Also run some really good cleaaner ( like Techron ) through the sysytem. If you have good fuel pressure, have the regulator tested. Hope this helps;
Thanks;
Rich
RPM Northwest

Jan 15, 2009 | 1994 Chevrolet S-10 Blazer

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