Posted by Steve@Advance on August 26, 2017 at 12:42:28 from (66.169.147.211):
Working on an 06 Ultra Classic.
It acts lean at idle. Start it up, it tries to idle for a couple seconds, then blubers down and dies. If I keep flipping the throttle I can get it to rev, then tries to run away, up around 2500 RPM, then returns to poor idle and dies, popping fire back through the intake at random. It seems to run OK once past the lean idle condition.
It acts like a vacuum leak, so I tried spraying carb cleaner around the intake gaskets and injectors. At one time I thought it gave some improvement, so I pulled the intake, replaced the gaskets and injector orings. Didn't see anything wrong, made no difference. Also replaced the plugs, just to say I did. I can make it somewhat idle by spraying cleaner into the throttle body, so I'm standing by the lean theory.
I have not checked the fuel pressure because I don't have the special quick coupler adapters needed, a $150 tool. There are no codes present.
My next move is to buy the fuel pressure gauge, or try to rig something up.
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