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Why is my tbi injector spraying too much gas? But wont start

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  • Cars & Trucks Master
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You did not give the year make and model, so here are two general questions.
Do you have two injectors and are both flooding the intake ?
Can you unplug the injectors and stop the flow ?

Posted on Jan 23, 2013

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Help w 1994 chevrolet truck

disconnect the batt. is your fuel pump running check fuse listen for it

Posted on May 28, 2009

  • 580 Answers

SOURCE: 92 chevy 1500 5.7 tbi starts and dies. replaced

Try using a good fuel line/injector cleaner Seafoam is a good one. If this does not help you may have tone or more clogged injectors. Clean these out and you should be good to go. tTo see Seafoam in action goto you tube type Seafoam into the search box.

Posted on Jul 08, 2009

cooper0365
  • 347 Answers

SOURCE: flooding on start up

try the cooling sensor

Posted on Oct 10, 2009

  • 278 Answers

SOURCE: 89 suburban. No spray from injectors after replacing ESC

The fuel pump should be in the 20s. Also it could be losing presure slowly. Leave the fuel pump pressure gage on for at least 2 to 3 hours to see if it is losing pressure - It's a start

Posted on Oct 14, 2009

  • 3600 Answers

SOURCE: 90 chevy k1500 350 tbi fuel problem starts but wont stay running

try bypassing the oil pressure switch on the back of the block behind the distributor, if there oil pressure switch goes bad it will do this. had one that drove me nuts trying to fix it then figured out I had to buy a book and low and behold thee it was 3 wire oil pressure switch you can't see between the engine and fire wall just behind the distributor and costs 8 bucks to buy new.

Posted on Jan 16, 2010

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2 Answers

1989 K1500 was running fine and just quit. Not getting gas but I can hear the fuel pump start when I turn the key on. took fuel line off of TBI and seem to have plenty of gas flow but nothing comes out of...


you need to have the fuel pressure checked with a gage and volume as if its not at the spec the injectors won`t open to spray enough fuel.also you should check the injectors for proper voltages and ground as if these are not within specs then the injectors won`t work either

Oct 17, 2011 | 1989 Chevrolet K1500

1 Answer

89 suburban. No spray from injectors after replacing ESC


The fuel pump should be in the 20s. Also it could be losing presure slowly. Leave the fuel pump pressure gage on for at least 2 to 3 hours to see if it is losing pressure - It's a start

Oct 14, 2009 | 1989 GMC Suburban

1 Answer

My 94 s-10 4.3 wont spray fuel?


you can purchase what is called a noid light not to expensive they plug into the injectors conection the noise your hearing is called a two second run . if the light don't come on the ignition modual needs replaced that is mounted under the distributor cap .

Aug 26, 2009 | 1994 Chevrolet S-10

6 Answers

90 chevy 350 with TBI starts but wont stay running changed fuel filter and fuel regulator dont know what next


I have a 90 chevy k1500 350 tbi with same problem! I have traced problem to... after turning on key fuel pump kicks on when u crank it over injectors shoot gas and truck starts! After few seconds injectors stop spraying and truck dies! This can happen many times over and over! Eventually sometimes truck stays running and all is great! I changed ignition module, oil pressure sending unit (which i was told controls gas after vehicle is running) fuel filter, computer, fuel pump relay, I am at a loss now! Hope this helps and hope someone can help me!

Aug 10, 2009 | Chevrolet C1500 Cars & Trucks

2 Answers

1987 chevy s-10 2.8 motor. Wont start and gas present on plugs. Getting fire and fuel. TBI injection. New plugs wires cap and rotor. Checked TDC and checked firing order.


Is it flooded? Have you tried holding the accelerator to the floor? You have gas spraying out of the injectors when cranking? Does it even try?

Mar 27, 2009 | 1986 Chevrolet Camaro

1 Answer

I have a 98 chevy 2500 that wont start but cranks over


You will need to get up there Right above the Throttle Body and hold a Good Maglight or LED Flashlight above the TBI and have Someone Crank it Over. You will see the Spray inside the Bowls if it is Getting to the TBI.

Jan 24, 2009 | 2003 Chevrolet Cavalier

2 Answers

93 yukon 350 wont stay running at idle


when you crank the engine do you see fuel spraying from injectors .if you dont check for power at injector connectors one side should power and the other will be ground controlled from pcm.you can test with a 12 volt test for both. first test with test light grounded for power then test with test lead clip to battery to pos to the other wire from pcm while cranking engine light should flash.if it does turn key off again lean over tbi and have somone turn key on and listen for fuel circulating through tbi unit if you hear it without cranking engine replace fuel pressure regulator.

Dec 02, 2008 | 1998 Chevrolet K1500

1 Answer

I am getting fuel to the tbi but it wont spray through the injectors please tell me what is wrong with it


Add techroline fuel injector cleaner and replace your fuel filter to increase the flow of gas to the injectors. You may need to repeat the cleaner until the injectors are clean.

Jul 19, 2008 | GMC Suburban Cars & Trucks

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