Question about 1993 Chevrolet Astro

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Fuel is flowing from the tank to the engine, but will not start. Engine will start if fuel is provided through the air intake port at the air filter.

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Check fuel filter and fuel pump,if the filter clugged change it, if pump doesnt work change both pump and filter.

Posted on Oct 02, 2010

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2 Answers

Hard starting


It can be caused by a bad crankshaft sensor, plugged fuel filter, or clogged tank internal filter, as well as a failing fuel pump. Although the crankshaft sensor may not seem to be related to the fuel group, fuel demand is anticipated by counting the RPM's which is the crankshaft sensors job.
Now "hard to start" issues can be fuel pump pressure problems. But do not forget the "cold start routine" which requires a temperature sensor to set the engine management system for a cold start. It becomes less of a factor when the engine is warm but would not be responsible for low fuel pressure.
A simple test for vacuum leaks is to have the engine running and use a spray bottle of water on vacuum lines, intake gasket seams, EGR pod and the brake booster. A leak will reduce RPM or stall the engine.
For the internal tank filter, sometimes the plastic screen on the fuel pump deteriorates and clogs the pump intake. To test that, blow air into the fuel test port. This will help clear debris inside the tank temporarily, then check fuel pressure without driving the car and stirring the tank up. If pressure improves you know the root cause of your problems.

Jun 27, 2013 | 1997 Lincoln Mark VIII

4 Answers

I have a 99 GMC suburban it has set for a few months its turning over but won't start I changed my spark plugs what else can I do.


with a glass.. like a shot glass poor half a shot into the intake. have a fire extinguisher handy and try starting it if it tries to start could be fuel pump or fuel filter

Jun 14, 2012 | 1999 GMC Suburban

1 Answer

Good fuel preasure,good spark, good compreation, no start, sparkplugs soaked with fuel.


check for a very dirty or clogged air filter, faulty Manifold Absolute Pressure sensor (or Manifold Air Flow sensor), disconnected or faulty Engine Coolant Temp sensor, disconnected or faulty Intake Air Temp sensor, and leaking fuel injectors or a stuck open cold start fuel injector. A pinched or blocked fuel return line from the fuel pressure regulator to the tank is rare but could also be a cause.

Feb 28, 2011 | Toyota Camry Cars & Trucks

1 Answer

My truck ran out of gas and i put gas in and it still wont start.. could there be a reset button somewhere and where is it located


when you vehicle runs out of gas most likely cause is it has sucked up dirt from the botton of the fuel tank into the intake pipe this dirt is now blocking the fuel line and or fuel filter.

1 remove the fuel line from the engine end and using a can to collect it turn the ignition on if you have an electric pump at the fuel tank end the fuel should flow if it doesnt then the line is blocked, try browing or putting compressed air down it to drive the dirt back into the tank. wait an hour for it to settle and then try to start the car. (also fit a fuel filter if one is not fitted already)

if fuel is flowing the dirt might have got into the engine and it will need to be flushed out.(chekc fuel filter if fitted and see if it is blocked it may need replacing.

I hope this was helpful

Dec 12, 2010 | 2000 Chevrolet Silverado 1500

1 Answer

1994 chevy s10 blazer starts won't turn over.


Start with the simple and try spraying some starter fluid in to the air intake tube (where the air filter is), If the engine starts, then your have no ignition issues and that it's going to be a fuel issue. Check the fuel pressure at the shredder valve which is located on the fuel line that goes in to the Upper intake manifold.

There should be 62-65 PSI with the ignition key's turned on Engine not started, if there is less then that. The fuel injectors will not operate to start the engine and your going to have to replace the fuel pump located in the gas tank. Note a dirty fuel filter that is restricting the fuel flow can also do this, so best to replace the fuel filter first before replacing the fuel pump and see if that will get the engine running again. (fuel sending unit)

When replacing the fuel sending unit, don't for get to replace the wire harness from the sending unit to the frame. It's common for the wires inside and insulator to break and will cause low fuel pressure issues for lack of electrical current flow.

If the engine does not start with starter fluid, then there is a good chance that you may have a ICM that has gone bad, coil of a crank shaft sensor that may need to be replaced.

Thank you for using Fixya and keep us posted.

Nov 25, 2010 | 1994 Chevrolet S-10 Blazer

1 Answer

How do i change the fuel filter in my gmc sierra 3500 diesel 6.5 and whear is located??


FUEL FILTER MOUNTED ON A BRACKET TO THE REAR OF THE INTAKE MANIFOLD.TO REMOVE FUEL FILTER.TURN OFF IGNITION.RELEASE ANY PRESSURE OR VACUUM IN THE TANK.DRAIN THE FUEL FROM THE FUEL FILTER BY OPENING BOTH THE AIR BLEED AND THE WATER DRAIN VALVE ALLOWING THE FUEL TO DRAIN INTO A SUITABLE CONTAIMER.UNSTRAP BOTH BAIL WIRES WITH A SUITABLE TOOL AND REMOVE THE FILTER.INSTALLING THE NEW FILTER ENSURE THAT BOTH FILTER MOUNTING PLATE FITTINGS ARE CLEAR OF DIRT.SNAP THE FILTER INTO PLACE WITH THE BAIL WIRES.CLOSE THE WATER DRAIN VALVE AND OPEN THE AIR BLEED VALVE.CONNECT A 1/8 INCH I.D HOSE TO THE AIR BLEED PORT AND PLACE THE OTHER END INTO A SUITABLE CONTAINER.DISCONNECT THE FUEL INJECTION PUMP SHUTDOWN SOLENOID WIRE.CRANK THE ENGINE FOR 10 - 15 SECONDS THEN WAIT 1 MINUTE FOR THE STARTER MOTOR TO COOL.REPEAT UNTIL CLEAR FUEL IS OBSERVED COMING FROM THE AIR BLEED.IF ENGINE IS TO BE CRANKED OR STARTED WITH THE AIR CLEANER REMOVED CARE MUST BE TAKEN TO PREVENT DIRT FROM BEING PULLED INTO THE AIR INLET MANIFOLD WHICH COULD RESULT IN ENGINE DAMAGE.CLOSE THE AIR BLEED VALVE RECONNECT THE INJECTION PUMP SOLENOID WIRE AND REPLACE THE FUEL TANK CAP.START THE ENGINE ALLOW IT TO IDLE FOR 5 MINUTES AND CHECK THE FUEL FILTER FOR LEAKS.

Oct 23, 2010 | 1993 GMC Sierra C3500

2 Answers

I ran out of gas and refueled now car won't start. Any suggestions?


when u run the gas tank empty it severly overheats the electric fuel pump inside the gas tank, this tiny pump depends solely on the fuel flowing around and through it to lubricate and cool it so it won't overheat, you have seized up the fuel pump, u can let it cool for an hour and make sure the pump is totaly immersed in fuel before retrying that means u must put in at least 5 gallons of gas.

Mar 29, 2010 | 1998 Ford Taurus

4 Answers

I have a 2001 Chevrolet Suburban will not start I turn the key it sounds like it is going to start but it does not.


can you hear the fuel pump running in the gas tank when you first turn the key to the run position?

Aug 08, 2009 | 2003 Chevrolet Suburban 1500

1 Answer

1996 Altima cranks, won't start


First, never use starting fluid on a gasoline engine. Check for dirty air filter, then check for Mass air flow sensor (Fault code) . This sensor controls fuel mapping, bad signal here will cause over fueling (black smoke) also called loading up (rich). Stopped up Air filter will affect Mass air flow. Perform OBD II test to prevent buying unneeded parts. Also delete stored codes.

Mar 01, 2017 | 1996 Nissan Altima

2 Answers

Discovery land rover will not fire.


try taking the air cleaner assembly off you might not be getting enough air to engine
if this is the case then the throttle body needs to be maintenanced

heres another suggestion it just hasnt sucked gas to the engine to crank over sometimes they help

go out buy an electric fuel pump
find the fuel inlet source to engine hook up electric fuel pump
attach only ground to something in engine compartment
then get a can so that when gas comes out it has something to go into
tap the electric fuel pump power lead to the positive of battery let run till gas comes out make sure not to spark your working with gas
once gas becomes present detach electric fuel pump all the way set aside
hook gas line back to port and then start vehicle this should start

also with fuel filters there are 3 on a vehicle
one in engine compartment
one on chassis back by the tank
and one in the tank called the sending unit this has a filter in the tank this one could be clogged
make sure these filters are in the right position with gas flow flowing in right direction

Jun 05, 2008 | 1994 Land Rover Discovery

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