noisy valves or rattle

bill2189 · #1 08-21-2003, 02:53 PM

i have a 99 fat boy and at a steady speed of around 25 mph in 1st gear it sounds like valve rattle with low octane but i run 93 94 octane any body got any suggestions </P>

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thanks bill</P>

bowsaw · #2 10-16-2004, 08:28 PM

Not your timing is it? could pre detonating, does it do it under load?

4boltsiron · #3 10-30-2004, 02:23 AM

Definately not the gas try the timing change. Did you change pipes, Jetting ?
need more info. for a better diagnosiis is siiiis?