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    1. 01-28-2011 #1
      fstkawi12
      fstkawi12 is offline Registered User
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      big problem with sbc!

      i bought a sbc with a 6-71 blower and i got a good deal on it. my buddy and i dropped it in ourselves but we have little mechanical skill. we were able to get it in just with the help of all of you guys on this forum. now that its in i can get it running but here is what happened... it idles pretty high regardless of where the idle screws are set and it will run for a little while (20 seconds or so) and then it sputters and wants to die. i also think it might be running a little lean. i am wondering if maybe i have a vacuum leak somewhere? i ran the line for the boost gauge but the gauge is not installed so i am wondering if it could be sucking air from that spot or should that not make a difference? I've adjusted the timing fast and slow and cant seem to just get it to idle correctly. please help! AHHHH!

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    3. 01-28-2011 #2
      BonzoHansen's Avatar
      BonzoHansen
      BonzoHansen is offline Registered User
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      sounds like maybe a vac leak. get the carb cleaner out and spray around the intake, carb, etc and see where the idle changes. is that line capped?
      Scott from NJ.

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    4. 01-28-2011 #3
      fstkawi12
      fstkawi12 is offline Registered User
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      no the boost line is not capped. i cant get it running well enough to be able to get out of the car and mess with the tuning. it revs, then it boggs, then it dies, etc...
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    5. 01-28-2011 #4
      6'9"Witha69's Avatar
      6'9"Witha69
      6'9"Witha69 is offline Registered User
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      You need to cap that line. It is causing a vac leak @ idle and an escape for the boost (if you can ever get it start to rev up).
      Nick R.
      69 Camaro - 383, 700R4, 12 bolt 3.55, Hotchkis, Bilstein, Global West, Morris Classic
      08 HHR SS - Still Stock for now
      Do you still believe in all the things that you stood by before? Are you out there on the front lines, or at home keeping score?
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    6. 01-31-2011 #5
      fstkawi12
      fstkawi12 is offline Registered User
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      would that cause high idle or lean condition? put the gauges in this weekend so i am going to try again tomorrow.
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    7. 02-01-2011 #6
      Scott Parkhurst
      Scott Parkhurst is offline Registered User
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      It would cause both high idle and a lean condition, yes. Plug that line!
      Scott Parkhurst


      2011 Car Craft Real Street Eliminator Winner
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