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Startup?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Wallyb, Feb 26, 2001.

  1. Wallyb

    Wallyb Registered Member

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    Location:
    Southwest Minnesota
    I thought with fuel injected motors the motor should fire right up, right away. Or does it take a few seconds?? My blazer cranks for a few seconds before firing. I just put in new plugs and fuel filter also! Just wondering on how yours trucks are starting??
     
  2. Itali83

    Itali83 1/2 ton status

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    My 87 TBI Jimmy takes a couple turns when cold, I always turn the key to run, let the fuel pump pump until it stops, crank and it will fire after a couple seconds. But when it is hot, I let the fuel pump pump like I did before but it fires right off, dosen't even turn over once. Hope this helps.
     
  3. CaptCrunch

    CaptCrunch 1/2 ton status

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    The TBI's really don't fire up too quick in terms of being FI'ed. It is only about 13psi fuel pressure so not a ton more then a carb. If it takes more then about 3 seconds to crank over when cold you could have a leaky injector or fp regulator... it would usually be combined w/ a small blk puff of smoke, but it would fire right up after that till you let it sit for a while.

    1987 Chevy K5 Blazer- 350 TBI
     
  4. Confederate9

    Confederate9 1/2 ton status

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    im not sure if this is good or bad, but in my carburated 85 i tap the gas a TINY bit nad it works awesome

    <A target="_blank" HREF=http://confederate9.coloradok5.com/>http://confederate9.coloradok5.com/</A>
    <font color=red>K5: Because size DOES matter</font color=red>
    [​IMG]
     
  5. Blazer_Boy

    Blazer_Boy 1/2 ton status

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    Thats exactly what you're supposed to do. Actually the manual say's 2/3 of the way down but if we went by the maunual we'd still be running 235s, I dont think so, lol. Its kinda funny but my '82 with the carb starts faster than my dads '89 Jimmy with FI. I usually hit my pedal two full pumps and I'm good to go. Of course when both are trucks are warm his can run circles around mine, what till i get my 3.73 12-bolt [​IMG]

    Two lanes wide, twelve yards long, sixty-five tons of American pride....Canyanero!
     
  6. coopertwpk

    coopertwpk 1/2 ton status

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    Location:
    Spring Valley Lake Ca.
    Actually it wont start till it registers enough oil pressure the electronic carbs also do this.

    88k5 silverado w4"lift soon to have <font color=orange>d44 and corp14ff</font color=orange> with 4.56s
     

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