Backfire - pop!

[Urrell]

Originally Posted by banquo

That's altogether different. Popping on decelation (over-run) is normal. Backfiring during acceleration is not, and as mentioned above, you need to be specific about whether it's spitting back through the intake, or backfiring through the exhaust.

If it's definitely doing it on acceleration then something is wrong IMHO...

Could it be pinking and not backfiring at all. If that's the case it spells trouble.

[memphis]

...I think my has a defo POP! Its does have a couple of 'metal' noises as well, but I've put that down to the standard engine noise?

Do you know if you can extend the HD warrantee? My bike is only a year old, so have 12 months still to run. Just thinking ahead....