1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Just barely staying alive at idle, full throttle

Discussion in '40- & 55-Series Tech' started by JohnL, Aug 20, 2003.

  1. JohnL

    JohnL

    Messages:
    358
    Likes Received:
    1
    Joined:
    Jul 2, 2003
    Thanks to all who helped get my new Painless harness and DUI distributor dialed in. It started right up. Went for a long ride and after sufffering some occassional and intermittent backfiring, decided to take it home and maybe retard the timing just a degree. It was running strong.

    I went to go start it up and found it wouldn't start , only a cylinder half firing and then dying. Found that my starter solnoid was bad (can you rebuild those?) and replaced it with a gear-reduction unit I had lying around. Now it starts fine, but it barely stumbles along its idle. It will half-heartedly rev up when it is floored (to a max of ~2000 rpm) but will stall or barely idle again when accelerater is let off. It cannot muster enough torque even to roll forward a few feet. It just stalls, even when revved.

    The carb was rebuilt a few months ago, but I haven't looked inside yet. Possibly a bad fuel filter??? I'll go replace that in a few minutes, when the garage is slightly more aired out.

    Any theories? I will, of course, check the static timing again...

    Thanks all
     
  2. offcamber40

    offcamber40

    Messages:
    279
    Likes Received:
    1
    Joined:
    Apr 26, 2003
    Location:
    Mountains of WV
    Re:Just barely stumbling at idle

    Maybe a vaccuum leak? I would check your vacuum ports and lines. If it is a vacuum leak, it would probably be a big one and noticeable they way you described your running problem.

    Mike
     
  3. JohnL

    JohnL

    Messages:
    358
    Likes Received:
    1
    Joined:
    Jul 2, 2003
    I don't have any carb cleaner here to check,

    ...but I highly doubt any problems with lines (I JUST replaced them all, none kinked or old) or ports (they all look good.) I would have suspected a vacuum leak to come on more slowly...running perfect one day, barely alive the next.

    Changed the fuel filter, same results.. ??? :mad: ??? :mad:
     
  4. JohnL

    JohnL

    Messages:
    358
    Likes Received:
    1
    Joined:
    Jul 2, 2003
    Got it on my own damn self

    Plugged fuel filter and too-rich idle mixture screw.