Won't start when warm

Discussion in 'Parallel Universe' started by oclv454, Apr 10, 2010.

  1. tmex

    tmex Long timer

    Joined:
    Apr 20, 2006
    Oddometer:
    2,039
    Location:
    NorCal
    That is what I thought, but I could be wrong. If you listen carefully you can hear an injector cycling when the ignition is switched on. I thought it was separate, but don't know that for a fact. In any case cycling the key gives the process a chance to "prime the pump" more than once.
    #61
  2. JRWooden

    JRWooden never attribute to malice...

    Joined:
    Jul 5, 2008
    Oddometer:
    6,917
    Location:
    North Carolina
    Ya know ... I just went out and turned the key on ... now I'm confused... :lol3

    Usually I hear a kind of a buzz/beep escalating tone that I pinpointed to the fuel pump pressurizing the rail (I think).

    Tonight all I hear is a clikca-clicka-clicka which I think is the idle air control stepper motor positioning its self for a cold start. (idle up)...

    I think I may have to spend a few months at Wyotech so I don't feel so stupid..........

    I need some sponsors.......... :wink:
    #62
  3. JoelWisman

    JoelWisman Long timer

    Joined:
    Apr 22, 2009
    Oddometer:
    1,392
    Location:
    STL, MO, USA
    There's no cold start injector on these bikes and I don't think the bike cycles the injectors with the key. Both would be nice but the EPA and DEQ, and probably DEA are against such these days :(

    The fuel pump only primes if the fuel pressure sensor on the fuel rail senses the system is not still pressurized as happens over time when fuel bleeds past the check valve on the fuel pump.

    I'm pretty sure all the clicks before engaging the starter are relays and the idle air control valve.

    I miss cold start valves.
    #63
  4. JRWooden

    JRWooden never attribute to malice...

    Joined:
    Jul 5, 2008
    Oddometer:
    6,917
    Location:
    North Carolina
    Joel...
    You reckon the EPA would be ok with one of these? :lol3

    [​IMG]
    #64
  5. JRWooden

    JRWooden never attribute to malice...

    Joined:
    Jul 5, 2008
    Oddometer:
    6,917
    Location:
    North Carolina
    Thanks!

    Memo to file ...

    The Beeeeeeeeeeeeeep sound means I'm not riding often enough!
    #65