Backfire while cranking. Does your fuel injected Harley do that?
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Seasoned HDF Member
Joined: Mar 2010
Posts: 38,614
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From: Honah Lee
Backfire while cranking. Does your fuel injected Harley do that?
I AM TALKING ABOUT A LOW BACKFIRE POP AT THE START OF THE CRANKING OF THE MOTOR AND BEFORE IT STARTS. NINE TIMES IT WILL CRANK FOR SAY COUPLE THREE OR FOUR CRANKS AND START, MIXED IN ALL THOSE STARTS WILL BE ONE WITH A START WITH ONE CRANK OR SO AND A LOUD POP (BACKFIRE IN THE EXHAUST) AND CONTINUING CRANKING TWO OR SO MORE AND START JUST LIKE THE OTHER EIGHTS. THE POP HAS NO EFFECT ON THE CRANKING AND THEY ARE ALL THE SAME FAIRLY QUICK START UPS AND BIKE RUNS PERFECTLY NORMAL FROM 95 OR SO DOWN TO 40 (MY PREFERRED RIDING SEASON)
Another user and are trying to see if this is normal. Sorry about all caps.
https://www.hdforums.com/forum/touri...l#post10870574
Another user and are trying to see if this is normal. Sorry about all caps.
https://www.hdforums.com/forum/touri...l#post10870574
Last edited by Jackie Paper; Feb 5, 2013 at 12:35 PM.
Seasoned HDF Member
Joined: Mar 2012
Posts: 100,455
Likes: 19,811
From: Centennial, CO
Mine does on occasion as well. Saw something similar in a different thread and the suggestion was as Soft 02 has stated. 1st thing to do is make sure the IAC is cleaned up.
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Ultimate HDF Member
Joined: Jan 2013
Posts: 5,092
Likes: 2
From: Wenatchee, WA
This is definitely not normal IMO. Sounds like something fugged with the ignition. You're getting a rich mixture in the exhaust and then when ignition does occur the opening exhaust valve ignites it.
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Joined: Dec 2010
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From: Temecula, CA
Mine does it on hot starts. On cold starts, she always starts fine but lets say you stop for gas and the restart her, she'll do that almost every time. I've found that if I give the throttle a twist, return it to neutral, and then start it, it won't happen.
