Evo BT Timing
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Joined: Mar 2010
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From: Poolville
Did you check your front intake seals... Could be sucking air..... If it is a single fire coil you should have three wires going to coil your power source and then your to ignition source's coming off of your pickup. Another thing you could try with the ignition is to switch the wires on the coil top one to the bottom one bottom one to the top one this will change the firing of the cylinders but make sure you change the wire location to each plug as well. This way you can determine if it is your ignition or not. If it moves to the rear cylinder you got a coil issue.
Last edited by 98hotrodfatboy; Aug 4, 2017 at 01:43 PM.
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Intermediate
Joined: Feb 2017
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From: Nebraska
Did you check your front intake seals... Could be sucking air..... If it is a single fire coil you should have three wires going to coil your power source and then your to ignition source's coming off of your pickup. Another thing you could try with the ignition is to switch the wires on the coil top one to the bottom one bottom one to the top one this will change the firing of the cylinders but make sure you change the wire location to each plug as well. This way you can determine if it is your ignition or not. If it moves to the rear cylinder you got a coil issue.
im very stumped
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Joined: Apr 2011
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From: SE Louisiana
Back up a sec, in post 3, you said stock Harley ignition, if that's the case, you have dual fire.
Make sure the ignition rotor is tight and indexed in the cam slot.
Is any goo (potting) leaking from the cam position sensor?
Make sure the ignition rotor is tight and indexed in the cam slot.
Is any goo (potting) leaking from the cam position sensor?
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From: Nebraska
Last edited by Bobbed; Aug 7, 2017 at 08:52 PM.
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From: Nebraska
Well, took everything back apart just to be sure I didn't miss anything. Got it all lined up again. Checked all my abc's, let the lifters bleed, got it all hooked up. Still missing on the front cyclinder. Face Palm*
I threw a set of old plugs on and it ran a bit better so I picked up a set of new plugs this morning. Bike ran perfect for about 30 seconds then went back to doing the same dumb thing it's doing. About to throw in the towel and take it to the Harley dealer.
Before I do that though gonna switch the lifters around, maybe one of them is bad.
I threw a set of old plugs on and it ran a bit better so I picked up a set of new plugs this morning. Bike ran perfect for about 30 seconds then went back to doing the same dumb thing it's doing. About to throw in the towel and take it to the Harley dealer.
Before I do that though gonna switch the lifters around, maybe one of them is bad.
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,187
Likes: 7,690
From: Poolville
Well, took everything back apart just to be sure I didn't miss anything. Got it all lined up again. Checked all my abc's, let the lifters bleed, got it all hooked up. Still missing on the front cyclinder. Face Palm*
I threw a set of old plugs on and it ran a bit better so I picked up a set of new plugs this morning. Bike ran perfect for about 30 seconds then went back to doing the same dumb thing it's doing. About to throw in the towel and take it to the Harley dealer.
Before I do that though gonna switch the lifters around, maybe one of them is bad.
I threw a set of old plugs on and it ran a bit better so I picked up a set of new plugs this morning. Bike ran perfect for about 30 seconds then went back to doing the same dumb thing it's doing. About to throw in the towel and take it to the Harley dealer.
Before I do that though gonna switch the lifters around, maybe one of them is bad.
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Joined: Apr 2011
Posts: 5,834
Likes: 7,865
From: SE Louisiana
That's a dual fire aftermarket ignition, swap the wires on the spark plug ends only, if the problem stays the same, it's not the ignition, which it probably isn't.
Let's see those plugs, which carb is on it.
Let's see those plugs, which carb is on it.
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From: Nebraska
Haven't had a chance to get over to my bike. The guy working on it though thinks the crank might have "turned"?? Hence why it won't run right?
We have tried swapping the lifters, putting s different carb on it and no improvement.
We have tried swapping the lifters, putting s different carb on it and no improvement.
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