Jump to content

Wont Start Unless You Pour Gas Into Throttle Body

gotdust

By gotdust
in Ask A GM Technician

Recommended Posts

gotdust New Member

gotdust

Posted
Posted

i have a 93 chevy pickup with 350, i am getting gas all the way up through fuel lines to back of throttle body, i am also getting power to injectors but truck will not start unless i pour gas into throttle body as soon as it uses it up it quits please help. thanks

luminaapv3 Enthusiast

luminaapv3

Posted
Posted

I'm taking an educated guestimation here :crackup: , but i would suspect the fuel regulator to be at fault or a blockage within the TBI.

One other thing to check is the linkage going to the TBI, when you push on the gas pedal does that linkage move?

Also just as a note, if this Throttle body has never been cleaned out it might be worth your time to take it apart and and clean it all out :D . I just got done doing it, all the vacuum ports and passageways where clogged :thumbs: . This was on my 93 burb with the 5.7 liter (350) engine.

It doesn't take that long either and all you need is a few gaskets, matter of fact Autozone has a gasket kit for this for like $7.00, but make sure your kit comes with 2 injector filters, mine only came with one! Had to order the other one.

Also note if the regulator is bad, you have to replace it, DON'T open it, there is a loaded spring inside under a lot of pressure. I think this part costs about 80 bucks if I remember right.

Good luck.

GMTRUCKTECH Enthusiast

GMTRUCKTECH

Posted
Posted

What is your fuel pressure at the throttle body? You could have fuel there but not enough pressure. Also you injectors could be open try tapping on them while someone cranks the engine.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Zane
      2027 GMC Sierra: Official Discussion

      By Zane · Posted

      Not sure about DFM tech but i know there's a stop/start deactivation button. 
    • KARNUT
      2027 GMC Sierra: Official Discussion

      By KARNUT · Posted

      I could be interested if they axed cylinder deactivation and at least have a button for stop start. I’m sure the HP numbers will be higher. I would want a longer warranty to help build confidence. I’m a less is more guy as I get older. A V-8 work truck model would be my choice. I know a few outfitters for custom additions I prefer. 
    • Zane
      2027 GMC Sierra: Official Discussion

      By Zane · Posted

      It's official. GMC pulled the covers off the next-gen 2027 Sierra 1500, and we got the first official look. Full breakdown here: https://www.gm-trucks.com/next-gen-2027-gmc-sierra-1500-v8-trim-changes/   The quick hits: SLE and SLT are dead. The new core retail trim is just called "Elevation". Two new V8s, a 5.7L and a 6.6L built with high-performance Corvette architecture roots. No horsepower or torque numbers yet. The 2.7 TurboMax finally ditches the old gearbox and gets the 10-speed automatic. AT4X moves to larger standard 35-inch tires with front and rear e-lockers, Multimatic DSSV dampers, and heavy-duty Jounce Control Dampers. Over 60 inches of combined display on Denali Ultimate and AT4X, complete with a motorized articulating center screen and an adaptive passenger screen. Seven simplified trims across the entire model line to clean up ordering confusion.   So let's get into it: New 5.7L and 6.6L gas V8s with custom active exhaust tuning and a Corvette connection. Is this the exact engine lineup half-ton traditionalists have been begging for? Purging the iconic SLE and SLT names after all these years to lean entirely on Elevation as the high-volume core. Bold move, or a mistake? That motorized articulating 16.3-inch screen that slides up to reveal a hidden dashboard vault. Awesome mechanical theater, or does it make you nervous about long-term durability? Physically lowering the headlamps in the front fascia to improve road courtesy and stop blinding oncoming traffic. Smart real-world engineering, or does it hurt the truck's aggressive stance? What trim are you putting your name down for on day one? Drop your first impressions below.  
    • Donstar
      Navigating senior years.

      By Donstar · Posted

      My overnight hospital stay turned into five.  I developed a post operative fever and an erratic  heart rate.  A blood clot in the lungs was the culprit.  This is apparently a common post surgical complication and easily remedied.   I was the youngest in a four bed ward and a Doctor with a Geriatric specialization was in charge of my care.  All of the nurses were good and some were outstanding at dealing with old people.  It was very evident that my age triggered a different level of care!  My advice to any senior going for a hospital stay is to have a trusted family member advocate visible.  If not, you will still be well cared for, but you may discover that your voice  isn't as strong as it once was! 
    • diyer2
      Gas Prices

      By diyer2 · Posted

      $4.25 85 oct. in town, down 50 cents.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...