96 dyna engine making banging noise under load
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Stage IV
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96 dyna engine making banging noise under load
I was out riding this weekend and my ride starting making a rapid banging noise when I let on the gas. The bike has 40,000 miles on it and I have been trying to get an ideal on where to look. The primary pulley feels tight, so I don't think that has come loose. I also check to ensure that the kick stand was not hitting the frame and that was ok.
Any suggestions would be appreciated.
thanks K.Martin
Any suggestions would be appreciated.
thanks K.Martin
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RE: 96 dyna engine making banging noise under load
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RE: 96 dyna engine making banging noise under load
It could be a loose compensating nut, primary chain out of adjustment (streched). Do you hear it at a idle, my friend recently had a knock at idle and above, it was a loose compensating nut even though the nut felt tight by hand, you could see where the nut was starting to grind away the outer primary cover. We narrowed down the location of the knock with an engine stethoscope.
John TN
John TN
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RE: 96 dyna engine making banging noise under load
More info would be helpful with a diagnosis. Noise under load, which gear, accelaration, decelaration, idle, etc. Does it remain constant, increase with engine rpms or speed, etc.
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Stage IV
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RE: 96 dyna engine making banging noise under load
The bike was loaded with myself, wife and T-bag (approx 375lbs). The noise started on deceleration after riding for about 15 minutes. If I kept on the throttle there was no noise and if I held the clutch in the noise would disappear. Later on the noise would continue at idle speed when stopped at a light, but would slowwly dissappear while waiting for light to change. If I stopped for a break or gas the noise would go away, but return after riding for a short distance.
I had the bike out last night trying to replicate the noise, but it doesn't seem to happen riding one up.
I had the bike out last night trying to replicate the noise, but it doesn't seem to happen riding one up.
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Seasoned HDF Member
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From: My house
RE: 96 dyna engine making banging noise under load
Check the primary chain adjustment and then if that's correct, check the compensating nut. You need to determine what area of the motor the sound is coming from if you can.
John TN
John TN
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Road Warrior
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RE: 96 dyna engine making banging noise under load
Im thinking you may find your noise from under the primary cover. I would recommend removing the cover for an examination. You should see some kind of markings to go with the noise you are hearing. Good luck.
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RE: 96 dyna engine making banging noise under load
Another thing comes to mind, if any work has been done to the rear wheel ( pulley cover or change), check the pulley bolts, I've seen the wrong type of bolts used that loosened up after a few miles.