Why the "POP" on startup?
#11
I got a brand new Wide glide that is doing the same thing, have not even got to put more than 20 miles on it yet..going back Saturday with it to get some stuff installed and was going to ask them why it pops on starting while im there.
#12
Man, I wish I could get flames to shoot out the pipes when I crank mine! That would be awesome!
#15
On EFI models, when you turn on the ignition, let the little engine icon on your speedo go out (about 3 seconds) before you hit the start button, it shouldn't pop then. Try it and see if that doesn't resolve the issue.
Marsh
Marsh
#17
+1, SIMPLE chit, first !!! THEN dig into it, deeper.
My 78 Shovel will 'pop', when you turn the key on, BUT I know, what causes that. I have Dyna S ign on it. I have it set on "Kick" vs "Electric". When set to electric, it will 'skip' firing, on the first revolution. Can you see where THAT would SUK, trying to kick start??
V twins, will 'stop', with one cylinder coming up on compression, IOW, READY to fire. The 78 will 'stop' just at that point, and when you turn the key on, in the "Kick" mode, it will FIRE, without touching anything !!! Skeers the chit outta ya, if you aren't aware of it, peshally, with drag pipes on it.
Retard the timing, just ever so slightly, even a couple of degrees, and the "pop" ceases to exist. BUT that takes ALL the fun outta the whole equation.
NOW, I know, you do not have "Kick" or "Electric" selection on your ign. BUT, your V twin, will 'stop' at almost TDC.
It is just MY theory.
If the Cap'n 'pops' during start up, BAD NEWS. Cause it was prob'ly, MY KNEE !!!!!
Last edited by Da Gumpmeister; 12-12-2009 at 05:46 AM.
#18
Thanks, that resolved the issue, I wasnt even looking at that icon, i was turning the ignition on and waiting for the fuel pump to pressure up and shut down, then starting, thats to soon. started my bike 5 times today waiting on the engine light to go out and not one single pop.
#19
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Had a 99' Sportster 1200 that would let one go on start, but it had a dual spark (wasted) ignition. Both cylinders fired at the same time everytime. It would fire the gas charge left in one cylinder after the last shutdown. Sounded awesome but scared a lot of kids on the sidewalks, especially the ones sleeping in the strollers.
#20
Thanks Marsh, never really bothered me much, but that's real good to know. Never woulda figured.