Question about 1994 Chevrolet S-10 Blazer

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1994 S10 Blazer won't start.

Hi
I replaced the fuel pump, fuel filter, relay switch, & the battery. I bled the fuel line of air via the valve in the back of the engine(just gas comes out now). It cranks over fine but it will not start. I disconected the air flow system & squirted some gas in it & it starts for a second. I don't have a manual on it(no money left) & don't know what everything is. Any help would be greatly appreciated.

Thanks
Frank

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  • lee Nov 06, 2008

    my 94 s10 blazer 4.3 wont start. went through 2 fuel pumps in a week it will run fine all day then wont start anymore. just replaced relays and still nothing. im stresed out any help

  • Anonymous Apr 14, 2009

    PLEASE I NEED HELP MY 97 BLAZER WILL NOT TURN OVER IT JUST CLICK NEW STARTER I JUST PUT ON

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Have 1994 blazer 4X4 vortec replaced fuel filter and check for gas at air valve at back of engine . it cranks but no start. tried littel gas throltle body it started for second . also its been setteing up for awhile > isit the fuel relay Thx

Posted on Oct 14, 2008

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I had the same problem try unhooking your vacum hose and then pushing your foot all the way to the floor and not letting up crank it. but dont stop and keep giving it gas. it should start but keep fluttering the gas but dont stop. it will take it awhile to actually stay running w/o you doing the gas but once it does try putting the vacum house back in & it should work. I know it sounds crazy but mine did the same exact thing and this is what it was.

Posted on Oct 27, 2008

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Do you have power to the pump a problem with the s-10 is there a hole in the carpet under the gas pedel check there for a broken wire if there is a hole in the carpet it wears the wire from your heal

Posted on Dec 02, 2008

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1 Answer

How do you bleed a diesel pump jeep Cherokee turbo diesel 3.1 5 cylinder 2001


we dont have this engine here, USA.
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starting page 12 , chapter 14


FUEL INJECTION PUMP BLEEDING
(1) If the fuel injection pump has been replaced,
air should be bled at the overflow valve before
attempting to start engine.
(a) Loosen the overflow valve (Fig. 18) at the
rear of the injection pump.
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WARNING: WHEN CRANKING THE ENGINE TO
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between cranking intervals.
(2) Crank the engine for 30 seconds at a time to
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the fuel injector drain tubes. Continue this procedure
until the engine starts. Observe the previous WARNING
and CAUTION.
(3) Tighten overflow valve.
HIGH-PRESSURE FUEL LINE BLEEDING
WARNING: THE INJECTION PUMP SUPPLIES HIGH-
-PRESSURE FUEL OF APPROXIMATELY 45,000 KPA
(6,526 PSI) TO EACH INDIVIDUAL INJECTOR
THROUGH THE HIGH-PRESSURE LINES. FUEL
UNDER THIS AMOUNT OF PRESSURE CAN PENETRATE
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WEAR SAFETY GOGGLES AND ADEQUATE PROTECTIVE
CLOTHING AND AVOID CONTACT WITH
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FUEL LINES.
WARNING: DO NOT BLEED AIR FROM THE FUEL
SYSTEM OF A HOT ENGINE. DO NOT ALLOW FUEL
TO SPRAY ONTO THE EXHAUST MANIFOLD WHEN
BLEEDING AIR FROM THE FUEL SYSTEM.
Bleed air from one injector at time.
(1) Loosen the high-pressure fuel line fitting at
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end quote.
pump timing is on next page
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Where is the knock sensor on a Kia Sedona 2.9 diesel, 2004 LA


Hi,
Here is the location of the "Knock Sensor" you requested, I hope it helps you. It is Number 17. for future reference here is the list of the others
1 = Camshaft position sensor (CMP)
2 = Crankshaft position sensor (CKP)
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18 = Mass Air Flow sensor (MAF)

25399765-f5d0u4e2gjrctbiof2rrhyew-2-0.jpg

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1 Answer

Car wont start


First thing I would do is to determine the fuel pump is actually still operating. Sitting for so long the moisture inside the tank may have corroded the pumps internals, when you switch on your ignition , have someone lay near the tank to hear if the pump engages and makes a whirring sound untill it pressurizes the lines. If that is ok I would disconnect the fuel filter, air compressor to blow through the lines after removing the valve on the fuel rail and fit a new fuel filter, once it is done ensure that you have fuel pressure up to the valve {in fuel rail end} Test the fuel pump also by placing a catchment bucket under the fuel filter, remove it then turn on ignition to see if it pumps fuel. might pay to also pull out the plugs and wire brush the rust off them. hope this helps.

Oct 20, 2013 | 1998 Cadillac Catera

1 Answer

How to bleed fuel filter


Gary, fuel filters do not get air trapped in them, and never get bled, just replaced when too old or dirty. Maybe you need a new one.
Do you hear the pump buzz on for a couple of seconds when turning key to on? It should come on long enough to pressurize the lines, and then the computer will turn it off if it doesn't get a crank signal. You may have to stand near the tank while someone turns key to ON. If you hear that short buzz or humming sound, then the pump is working. If no sound when key is turned on, the pump may have failed, or the wiring or relay to the pump needs diagnosing. Occasionally, a pump will work but not build enough pressure for the injectors to work properly. Presssure would be about 40 psi for a mpfi system, so you might want to have the fuel pressure checked. Or if you have a test port, a schraeder valve (looks like a air valve on a tire) located on the engine fuel rail, just depress the valve with a little screwdriver and see if gas shoots out. Remember, that's 40 psi, so don't have your face over it- it may shoot up to the top of the open hood. Engine does not need to be running. Just turn key to on for a few seconds, so the pump will pressurize the system. Pressure yes? Fuel system is good, The only other thing to check in the fuel system would be if the injectors are pulsing, letting gas into the cylinders.
Good luck. If fuel system is good, move to the ignition system, and check for spark at the plugs.

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You've already eliminated the spark plug & wireset, distributor cap & rotor.
Sounds like your car needs a tune-up, specifically, the PCV (positive crankcase ventilation) valve, and/of the EGR (Exhaust Gas Recirculation) valve.

Components checked/replaced during a tune-up are:
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motor oil
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Priority Action Part Type -- Cause
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10 Inspect Solenoid Switch -- Faulty Starter Solenoid Switch.
11 Inspect Fuel Pump Relay -- Faulty Fuel Pump Relay.
12 Inspect Fuel Injector Pressure Regulator -- Faulty Fuel Injector Pressure Regulator.
13 Inspect Ignition Switch -- Improperly Connected or Faulty Ignition Switch.
14 Inspect Starter Drive -- Faulty Starter Drive.
15 Inspect Fuel Injector -- Dirty or Worn Fuel Injectors.
16 Inspect Fuel Pump Strainer -- Clogged or Dirty Fuel Pump Strainerat.
17 Inspect Engine Control Computer -- Incorrect Operating Information Being Delivered and Sent From The EEC.
18 Inspect Fuel Tank -- Fuel Tank Empty.
19 Inspect Carburetor -- Carburetor Flooded or Faulty Choke.
20 Inspect Distributor -- Worn, Loose, or Incorrectly Installed Distributor.

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3 Answers

My sons 2000 s10 truck stopped working on his way home from school he thought he ran out of gas so he put two gallons of gas in it turns over but will not start engine is 2.2 could it be the fuel pump


Once the fuel tank was empty the fuel line has got air locked and so the fuel pump will neot work unless the air is bled out of the system.
So open the cap to the fuel tank and using the palm of your hand to cover the mouth of the fuel tank try to blown to pressurize the tank.
if this wont work the fuel line to the pump must be opened and the fuel bled out.
Now the fuel will flow to the pump and start the engine.
Never run the tank dry.

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Hi, under the hood you will have a electrical box with about 4 relays in it. You will find one that is marked fuel. The relays are the same, so try changing 1 with the fuel one. They should be marked on the inside cover. This happened to me, and after switching relays, it was fine. I bought another for $11.95 to carry with me. Mine was a 2000 Silverado 1500. Please get back to me and let me know if this does the trick!
Sincerely,
Shastalaker7

Jan 21, 2011 | 1999 Chevrolet Silverado 1500

2 Answers

My 2005 Trailblazer ran out of gas, now it won't start. It cranks and catches, but shuts right back off. Is there a fuel shut off valve? If so, where?


check fuel pressure may have gotten air in system-- at the fuel valve port under hood the valve looks like a tire valve and is on the fuel line have a rag handy turn key on not start u want to here fuel pump hum when stops turn off key and at valve with rag around depress pin should get fuel if air let bled and pressurize again continue till air out -if nothing and pump came on possible filter clog or pump burnt -if fuel, have pressure checked may not be enough pressure to keep running this also filter or pump damage good luck

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before you drop tank again, check fuses & relay.then disconnect fuel line @ filter turn key to on position should hear fuel pump run and get gas stream out of line. if no flow from line new pump faulty be sure & remove negative battery cable first good luck.

Jun 04, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

I have a 89 s10 pick upwith a 2.5L did a tune up plugs wires cap rotor it ran and parked it in the drive next day it wont run fuel pump is running if you pour gas in the throttle body it will run need help


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Jun 03, 2009 | 1998 Chevrolet S-10 Pickup

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