2010 TB Loud rattle on start up - Page 2 - Triumph Forum: Triumph Rat Motorcycle Forums
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post #11 of 12 (permalink) Old 02-05-2012, 08:11 AM
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Main Motorcycle: 2010 Thunderbird 1700
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Join Date: Jun 2010
Location: Sun City, Arizona
Posts: 59
Other Motorcycle: 1986 GL1200 Aspencade
Extra Motorcycle: 1986 CB650sc Nighthawk
RE: Loud rattling noise

My T-bird has been doing that since 2000 miles. The dealer has checked the valve adj., compressiom release springs, even went into the lower end and checked rod and crank bearing clearances NOTHING! So I was told to just ride it. I have 9200 miles on it and it runs great with no problems. I did find Rotella T keeps the noise down the best. The Harleys can't hear it from waaaaaay back there.

Those that say "OLD IS SLOW" have never ridden a V65 Magna!
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post #12 of 12 (permalink) Old 02-26-2012, 05:15 AM
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Originally Posted by kurbennett View Post
Ok wise ones, need some thoughts here. If the Birds is completely cold, when I start it I get a loud rattle on the right side (as you sit on it) of the engine. The bike starts ok, but the rattle is there for about a minute, gradually growing quieter. If the bike is warm the noise is not present. It seems to run ok otherwise. Any thoughts on what it might be?
if its one side only you might have a sticky decompressor. put a long handle screwdriver against the exhaust end of your cam cover and the other end against your ear and check if thats the source of the rattle. mine rattles for a few seconds but its a general noise like loud tappets, this is ok.
could be a cold chain tensioner, check out where the noise is coming from more accurately by uising the driver to pin point the source
as its a new sound just because it runs ok when hot doesnt mean its ok, i read of a lad who ran his with a broken decompressor and only found out on the big service, the end of the cam had snapped.
if this is a new sound its worth getting it noted with the dealer just incase you need it fixed under warrenty
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