Question about 2001 Harley Davidson FLSTF - FLSTFI Fat Boy

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High pitch howling/whirring in engine

Just had cam chain tensioners replaced, but still have a howling sound in engine. Mechanic says this could be counter balancers and would not cause a problem. Does anyone know what could be causing it?

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  • smoothie429 Mar 24, 2009

    I bought my first Harley last July in 08' my husband & I took it for a test ride and we both could hear the howling/whirling sound. We asked the seller about it and he said, that everything was well taken care of and tuned to the best of his knowledge. He used to work for J & K cycles and would get discounts on parts. This bike is loaded with alot of chrome. We had a chance to ride the motorcycle from the time of buying up until today a total of about eight times. I can always hear the noice. We put it away for the winter back in Oct., ran all the gas out, the cap on the oil tank blew off and sprayed oil all over. We are seriously hoping that we are not going to have to dump big bucs into this beauty!

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Very important. When tentioners, (primary & secondary cam chain tentioners) where replaced. Did they update bearing support plate bearings, and even more IMPORTANTLY.
INA Inner Cam Bearings removed and replaced with Torringtons?

If not you are about to experiance a broken oil pump body, feed & return gears for pump. And either new cases (3,500 bucs) Or repair, which I'm unsure of cost. Haven't gotton bill yet. Wish I could add pics.Unbeleavable what needle bearings can do to. Waiting for cases to come back... Customer took this as his opportunity to custom build A MONSTER of a motor.
When INA bearings are chattered they do make a whirring noise.

Posted on Feb 11, 2009

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Posted on Jan 02, 2017

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