Question about 1990 Chevrolet K1500

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90 Chevy 350 wont start..has good spark getting fuel to tbi if anything possibly too much fuel??..not sure tho..injectors appear to spray a good cone shape..I have changed out cap n rotor pick up coil plugs n wires..tested by the book most if not all sensors..I took fuel line off at filter and was testing flow when it seemed to fire up and run for a few seconds..longer than any other attempt over last few months..any help would be great I need to fix soon to go back to school. Thanks for your time joe

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  • Chevrolet Master
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You have stumbled on the problem when you reduced the fuel flow / pressure when it fired with the fuel line off
yes it has good cone shape at the injectors but excessive fuel so it is in effect flooding

Posted on May 22, 2017

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Posted on Jan 02, 2017

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SOURCE: i am getting fuel to

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.

Posted on Jul 19, 2008

  • 1118 Answers

SOURCE: i want to put a 454 TBI on a 350 TBI unit

Yes.

Posted on May 03, 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

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SOURCE: 90 chevy 350 with TBI starts but wont stay running

Barring any ignition problems, it may be one of these sensors that are part of the TBI.
TPS throttle position sensor, and the IAC idle air control
the following web page has some good info
http://www.goingfaster.com/spo/tbi.html.

Posted on Aug 10, 2009

  • 198 Answers

SOURCE: 1994 chevy suburban, no fuel coming from fuel

Put an injector noid light at the injector plug terminals to see if your getting a signal from the PCM(computer).If not try to find a computer from the same vehicle that works and swap it into yours to check.A PCM swap will take about 15minutes.

Posted on Sep 23, 2009

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1 Answer

90 chevy 350 tbi crank no start, truck was started driven around the block parked it and let it idle a few minutes before shuting it off, the next day it would not start, it acts like timing is off and is...


You first need to check the fuel pressure, an easy way to access this is to buy a can of spray starting fluid, spray it into the TBI throttle valve and if the truck starts and dies you have no fuel pressure. Replace the fuel; pump, and make sure you get the right pump, it is a low pressure system.

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I'm having the same trouble with the flooding after warm start...if it's the temp sensor, would the temp gauge be working? It's in a 1991 Chevy van with an injected 350 carb.

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Make sure you are getting power to the injectors. I have the same,350 tbi. Check the fuses and relays and check the wires at the tbi to make sure one of them is not rubbed through. The injectors have to be getting intermitent power .

Mar 09, 2010 | 1990 Chevrolet K1500

1 Answer

I have a 98 k1500 with 5.7 350 and it wont start, has spark and fuel at the tbi but the injectors wont fire, will run on ether if sprayed down the tbi any ideas


have the fuel pressure checked ,im assuming it is a vortec,
you need about 55 psi continusly to keep it running, i have a 96 2500 sierra. the fuel pumps were known to be terrable in these trucks. i put a new one in, then had to remove it to replace it again amonth later, they are flawed by manufacturing design.

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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!

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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

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