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Engine Squeal 87 Shadow with 31K miles. I reinstalled a new head gasket, put it all back together and after about 2.0 hrs on the engine, I started to get a squeal after the motor warms up. It seems to only happen after the engine is warm. Not sure if it's a bearing or something else. Here is a video with sound: http://www.youtube.com/watch?v=u_nPcnCTC1I

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  • Motorcycles Master
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Suggest you re-tension the head studs as the heat of a hot motor is probably allowing them to stretch just enough for the compression gasses to leak out. Use a tension wrench for this operation.

Posted on Jul 17, 2013

Testimonial: "The noise really seems to be coming from the lower part of the motor; around where the crankshaft is located. If gases were leaking out, would the sound be coming from so low on the motor? I assumed the sound would be closer to the heads. Thanks for the help."

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6ya6ya
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Posted on Jan 02, 2017

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DickCanFixIt
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SOURCE: Yamaha XV 1600 Will not start. Starter motor works

The sprag clutch that kicks the starter gear into the flywheel is not engaging. This may involve splitting the engine/transmission case if you have to clean or replace that mechanism. I have had success running CD-2 as described here. You might try that before tearing into the bike.

Posted on Mar 19, 2009

  • 7 Answers

SOURCE: Strange noise in cold HD EVO engine

I had a similar situation with a Harley once that turned out to be a broken front motor mount.

I do not work on many Harleys, but I was told that it was a fairly common problem with that model.

Maybe that will help, maybe it wont.

Posted on Nov 24, 2008

kvcmptr
  • 8 Answers

SOURCE: Clutch slipping while cold, when warm/hot, it operates great.

I have a 2000 Vulcan Nomad FI & had a very similar problem. In fact, it's a very common problem with these bikes. I fixed it by replacing the Clutch Spring. (As Described here: http://www.gadgetjq.com/clutch_spring_replacement.htm

It cost me $40 and 3 hours of time with an impact wrench.

Posted on Jan 26, 2009

  • 3567 Answers

SOURCE: I have a rattling sound from my burgman 400 k8.

Change out the gas to a higher octane and do not use gas with ethanol. This sounds like engine knock > translated; pre-ignition of the fuel in the cylinder. This is not a good thing to have. It is hard on the crank and even harder on the piston. If the problem does not go away after a tank or two ask the dealer to check the engine timing. Also check gearbox oil level. Low oil creates heat and heat promotes detonation aka pre-ignition.

Posted on Mar 12, 2009

carlsbiz
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SOURCE: Yamaha TW 200 starts but won't run.

If the bike has sat for a long period of time without being run - the gas that is sitting in the carb(s) will shellac.. Then the carb(s) would need to be cleaned and "rebuilt"..

Posted on Sep 14, 2009

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