999 EFI blowen blk smoke

Discussion in 'Engine, Fuel and Exhaust' started by frankslagoon, Apr 11, 2015.

  1. frankslagoon

    frankslagoon New Member

    My 99 EFI has run super until recently he seems to be running real rich. when I start it cold it ldles up for a minute then comes down perfect. if I shut it off and start again it runs real rough and blows blk smoke. we set the TPI to .275 V and replaced AT sensor and gasket. injectors don't seem to be leaking. air cleaner is clean Bike is all stock. after 2 or 3 hundred miles the plugs foul out. The bike is 100K bike but dealer says it's still pretty tight. Any ideas?
  2. fin_676

    fin_676 Experienced Member Staff Member Moderator Contributor

    As a quick thought too rich may be not enough air ie the air cleaner may be blocked or in need of replacement or cleaning