Question about GMC Sierra 3500

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AS we trying to pump fuel in to fuel pump we are getting air but no fuel what did we miss

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Posted on Mar 11, 2011

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1 Answer

Engen problem and missing


Sir, your question is not very clear, but I will still try to post a solution here. Engine missing could be due to any problem in fuel system, ignition system, engine or ECM as well.

LOW ENGINE IDLE SPEED (Poor idling):
-Throttle body (do the cleaning and idle speed learning)
-A /C signal circuit
-Fuel pump control circuit
-Fuel pump
-Intake system
-P C V valve (clogged or open) and hose

ROUGH IDLING:
-Cylinder Compression
-Ignition system (Igniters, spark plugs, wiring harness)
-Spark plug fouled, gap too wide or too short. (1.00-1.1 mm)
-Fuel injector circuit
-E C M power source circuit
-Fuel pump control circuit
-Fuel pump (required pressure 44 psi - 49 psi)
-Throttle body (cleaning)
-Intake system
-P C V valve and hose
-Air fuel ratio sensor
-Heated oxygen s ens or
-Mass air flow meter
-Idle hunting
-Throttle body
-Intake system
-P C V valve and hose
-Air fuel ratio sensor
-Mass air flow meter

HESITATION/ POOR ACCELERATION:
-Fuel pump control circuit
-Fuel pump
-Spark plug
-Ignition system
-Fuel injector circuit
-E C M power source circuit
-Mass air flow meter
-Throttle body (do cleaning)
-Intake system
-Valve timing
-Cylinder Compression


Jan 18, 2014 | 2008 Toyota Corolla

1 Answer

What causes a 2005 dodge neon to completely stop while driving?


there could be many issues why such as loss of fuel, air not getting into tank causing fuel starvation. ingition managment system may be defective, the air filter is blocked, or the exhaust pipe is blocked.
causing air starvation. for the engine to run it needs fuel, air and ignition.
if any one of these is missing the engine will stop.

to check fuel, open your filler cap, if you hear the air rushing in as you open it this could be the problem, with the cap removed try to start the engine. also check to see if fuel is being pumped into the engine, either the fuel managent system or the fuel pump needs to be looked at if this is not happening.

for the ignition, check you are getting a good spark, and that your plugs are clean. if they are wet or coated in white this may mean your fuel mix is not correct.

i hope this was useful.

Sep 02, 2012 | 2005 Dodge Neon

1 Answer

New fuel pump, new cap, plugs and wires, clean air filter. My 98 Jimmy sounds like its missing, it boughs down. Mass air flow regulator? Fuel regulator? Also using a lot of gas lately.


You are right, all of the symptoms are pointing to a fuel pressure regulator. Also try inspecting your vacuum line going to your fuel pressure regulator.
Matt

Jun 24, 2011 | 1998 GMC Jimmy

2 Answers

A 460 engine that acts like its not getting enough fuel. Will start but runs as if only on half the cylinders missing badly or such.


Check your running fuel pump pressure. If (as I suspect) it's too low, first try changing your fuel filter. After changing the filter, recheck the running fuel pump pressure. If still low, check you fuel pump pressure regulator. If OK, you may need a new fuel pump.

Also probably would be a good idea to replace you air filter.

Good luck!

Jan 09, 2011 | 1990 Ford F250

2 Answers

Why my motor miss during acceleration?


MISSING CAUSED BY MANY THINGS LIKE BAD SPARK PLUGS, WEAK IGNITION COILS.STOPPED UP FUEL FILTER OR FUEL INJECTORS.WEAK FUEL PUMP.CHECK FUEL PUMP PRESSURE SHOULD BE 44 - 50 PSI.LOW CYLINDER COMPRESSION CAUSE MISSING.

Oct 08, 2010 | 2001 Toyota Echo

2 Answers

Mi truck a toyota 85carb,when I rever up high rpm starts missing like not enough gas You think maybe is the fuel pump?


If it start and it misses and like not enough gas. it means that there is a problem in the fuel pump that why you have to check the fuel pump and the fuel lines may be there is a dirt or may be the fuel pump is worn out.But if you don't have time to fix the problem of your fuel pump . Then you have to go to a car mechanic and let them fix the problem of the car. But if you have time to fix the fuel problem then this is what to do.The owner of the car should be able to check fuel lines .Prepare the equipment and tools to be used in checking fuel lines .So that fuel will flow freely and no abstraction within the fuel lines .Locate the fuel lines ,visual inspection on duel lines for learage, Disconnect lines at fuel pump and fuel pump.Use compress air to remove sediments on fuel lines .Re-install fuel line to the unit.But if the problem is the fuel thank that it is being worn out or malfunctioning .The owner of the car should prepare the equipment or tools in servicing the fuel pump.So that fuel pump will operate properly .Locate the fuel pump .disconnect the fuel lines from the fuel pump.remove the fuel pump from the engine. Dis-assemble the fuel pump.Check the diaphram for defects.Replace defective parts.Assemble and install the fuel pump.And always use safety rules in servicing the fuel pump.

Oct 04, 2009 | 1985 Toyota Pickup

1 Answer

1989 ford aerostar will not start when engine is warm.


AM temp 55 car started but stalled out after starting. Attempted to restart and did not hear fuel pump. Tried again and then fuel pump kicked in. Checking fuel pump inertial switch and fuel pump electrical supply.

Apr 19, 2009 | 1989 Ford Aerostar Cargo

1 Answer

Missing once at running temp at random


Since the problem obvasly was not solved, try replacing the fuel injectors, as most of the time this is what causes these symptoms.

Oct 16, 2008 | 1996 Subaru Legacy

3 Answers

1997 jeep cherokee-fuel injection problems


Try replacing the Oxygen Sensors... I had the same problem and replaced my Oxygen Sensors and I haven't had any problems since.

Jun 29, 2008 | 1997 Jeep Cherokee Country

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