SOURCE: have noise in front of primary only with passenger
Sound like a loose Compensator nut.
The compensator nut is the part (the nut) that attaches the front sprocket to the motor crank.
When a cylinder of a v-twin fires there is a very strong power pulse.
To keep from shaking the bike and rider apart these pulses have to be
"smoothed" out. Harley does this by NOT solidly attaching the front
sprocket to the engine - they use a "compensating sprocket".
A crank shaft extension, double sprocket, sliding cam, and a stiff
spring together form a "compensating sprocket". When a cylinder fires,
the power stroke is smoothed out by the action of the compensator cam
and springs.
The compensator nut is what holds the compensating sprocket assembly on the crank.
There are a LOT of forces acting on this nut and sometimes the nut
loosens up. A loose compensator nut results in a compensating sprocket
that can move laterally on the crank. A loose compensator nut therefore
is one potential source of engine vibration.
Harley-Davidson issued service bulletin a while back that changed the
procedure for tightening the compensator nut, after a spate of bikes
had problems with this nut working loose.
Check with your local Dealer to get the correct torque spec and procedure for your year bike.
SOURCE: I have a 03 dyna lowrider. Noise from the engine
are you using good quality , high octane fuel?
SOURCE: Bike reving at about 4000 RPM tensioner sounds noisy
the timing chain sounds as if it needs rplaced
SOURCE: less pick up in my pulsar 2006 bike
a compression test could be in order-buy a clymer manual and cylinder comp kit however make sure your not neglecting maintenance-check plugs and wires/coil also inspect carbs and fuel system
SOURCE: 2004 Harley Davidson Rattle in Primary
Pretty hard to offer suggestion with so little info.
If chain drive could be chains too loose.
Check oil level.
Get M/C shop to check......alot of good money at stake there.
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