Question about 1993 Chevrolet S-10 Blazer

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What is the fuel pressure psi supposed to be? I have a tester, but I don't know what number I should be looking for. 1993 S10 Blazer

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Should be 35 PSI

Posted on Feb 08, 2009

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What is the fuel pressure supposed to be

the 3.3L engine fuel system operates at 55 psi (379 kPa). With the engine idling and the manifold vacuum applied to the regulator, the system operates at approximately 46 psi (317 kPa). Without vacuum applied to the regulator, the 3.5L engine fuel system operates at 48 psi (331 kPa). With the engine idling and the manifold vacuum applied to the regulator, the system operates at approximately 39 psi (269 kPa).---------------------------------------------------------------------------------
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Apr 18, 2013 | Cars & Trucks

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I have a 95 GMC suburban and my husband was on his way home and it died on him. it has gas in it and tries to turn over but wont start. what could it be?

What your going to have to do is have the fuel pressure checked.The pressure has to be 9-13 psi.If you have the 5.7 engine.If it is a 7.4 then it has to be 26-32 psi.If you don`t have a pressure tester then try tapping on the bottom of the fuel tank and if it starts then replace the fuel pump.If this is good then check for spark at the spark plugs.Let me know what you find.Good luck.

Apr 07, 2010 | 1995 GMC Suburban

1 Answer

My 450 ford moter home turns over but will not start I suspect feul pump

Hello mfsbrown: My name is Roger and I will help. First thing to check is to make sure the fuel filter dirty. Next you should check the fuel pressure. This will require a fuel pressure tester. You did not say if you have a gas or diesel engine. So I will furnish both test pressures. For a V-10 gas engine. (KOEO) Key On Engine Off 35 to 45 psi. (KOER) Key on engine running 28-45 ps. IF your engine is a diesel then the pressures are (koeo) 30 psi. min. (koer) 30-80 psi. If the fuel pump is your problem. Make sure to replace the fuel filter. A dirty fuel filter will cause damage to the fuel pump. Should you need further help please just ask. Please rate the answer. This way I know it was helpful. Thank You for using Fix Ya. Roger

Oct 28, 2009 | 2001 Ford Super Duty F 450

1 Answer

2003 Expedition hard to start

HI ' sounds like a liking fuel pump check valve ,to test install a fuel pressure tester follow instruction on tester ,turn key on don't crank engine over turn key off and back on again note your fuel pressure should be 38 psi to 48 it should keep 20 psi in system after 10 minutes of just siting replace fuel pump if you loose the pressure

Sep 23, 2009 | 2003 Ford Expedition

2 Answers

Car turns over but won't start.

Have you checked the fuel pump relay with an ohmmeter/multi-tester? You will have to follow the power lines to find it. I would check the relay first. Then check fuel rail fuel pressure. It may be faulty fuel pressure regulator or a sensor. Is your check engine light on? If so, I would have the codes read to pinpoint exact problem location. Check your spark to make sure each plug is firing.

If you want more info let me know.

Jul 20, 2009 | 1999 Dodge Stratus

1 Answer

2002 blazer 4 wheel drive hard to start

If the pressure is slow to rise, you should consider changing the fuel filter if it has not been done in the past 30,000 miles.
Next, disconnect a spark plug and check for spark while engine is cranking. Use a spark tester or old spark plug grounded to the engine block.
Let me know.

Mar 23, 2009 | 2002 Chevrolet Blazer

2 Answers

1999 Ford Taurus wont start unless primed (fuel problem)

t's the fuel pump...unfortunately it's in the tank so you have to drop the whole tank to get to it... I don't know where you live but if it's in phoenix AZ i know of an awesome place to get parts cheap. new let me know

Mar 08, 2009 | 2000 Ford Taurus

1 Answer

Fuel pressure

With the 3.1 engine: Ignition on 52-59 psi, at idle 42-56 psi. With the 3.8 engine: Ignition on 48-54, at idle 38-51. Let me know if your's is supercharged the specs maybe different.

Jan 23, 2009 | 2001 Pontiac Grand Am SE

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