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Help/ideas required: '89 TBI wont start :=(

Discussion in 'GM Powertrain' started by Johnny_Buchanan, Aug 14, 2012.

  1. Johnny_Buchanan

    Johnny_Buchanan Rockstar 100 Posts

    Pulled Red Dust - '89 350 TBI - to company car park this morning. I was running low on petrol, actually lower than ever before, the needle was close to empty. The plan was to to fill the tank upon leaving, closest pump being only mile away.

    However, when time came, no go! Cranked powerfully but did not catch. Obviously, I figured that maybe I had indeed run out of petrol. Managed to pull appr. 15 liters to tank, needle moving up and over of first mark. Still no go! Eventually I was forced to give up and bummed a ride home from co-worker.

    I must go back tomorrow with some xtra petrol and try again, but I'm starting to think that this might not be an empty tank problem.
    The place is such that no work/diagnosis is really possible, so if it doesn't start tomorrow with the simplest things its tow truck time.

    The question to forum members is: any ideas on what might've gone wrong? As said the truck was running nicely untill turned off, allthough 'service engine soon' light did stare at me some part of the journey and was glowing when I turned the engine off. SES has been occasionally coming and going in recent past but so far I've not taken any action on it, did it now bite me back?

    -J
     
  2. skullblaster

    skullblaster Member

    Well, the couple of things I can think of, are that you may have pulled some junk into the fuel filter and plugged it up, or that your fuel pump decided to give out. I've had both problems a time or two.
     
  3. Kady

    Kady Rockstar GMTC Chick 100 Posts

    ^^ agreed... These trucks are notorious for fuel pumps going bad, and running full tanks help keep them a little longer. The fuel helps cool the pump to prevent it from over heating and failing..
     
  4. Johnny_Buchanan

    Johnny_Buchanan Rockstar 100 Posts

    Thanks guys! I ended having Red Dust towed to a specialist nearby :( Will inform here of the outcome.

    -J

    Sent from my iPhone using Forum Runner
     
  5. tbplus10

    tbplus10 Epic Member Staff Member 5+ Years 5000 Posts Platinum Contributor

    Keep in mind the fuel pump is cooled by the fuel in the tank, running low on fuel would cause the pump to run hotter by working it harder and then when you shut it off theres nothing to cool the pump.
    And as pointed too you may have sucked accumulated trash from the fuel tank.
    At the very least at this point I'd change the fuel filter and probably the pump.
     
  6. Johnny_Buchanan

    Johnny_Buchanan Rockstar 100 Posts

    Ok, collected Red Dust earlier today. New petrol pump and hey presto: I'm close to 6 hundred euro poorer, but my truck runs so I'm a happy camper again!

    -J

    Sent from my iPhone using Forum Runner
     
  7. Kady

    Kady Rockstar GMTC Chick 100 Posts

    Where are you from
     
  8. Johnny_Buchanan

    Johnny_Buchanan Rockstar 100 Posts

    Finland, the land of heroes and gentlemen ;)

    -J

    Sent from my iPhone using Forum Runner
     

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