Harley Davidson XL 1200 C Sportster Custom - Recent Questions, Troubleshooting & Support - Page 6
2008 Sportster 1200C - When
The hissing sound that you're hearing may be crankcase pressure being bled off or compression bleeding off through a valve that is not completely closed. The delay on the engine turning over could be caused by residual compression, a slow starter relay, or a slow starter solenoid. How old is the battery. Heat, vibration, and age is what kills a battery, not mileage.
Good Luck
Steve
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