Very loud engine noise...
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Road Warrior
Joined: Dec 2008
Posts: 1,810
Likes: 4
From: Out and about
Very loud engine noise...
So I decided I was going to haul *** through an off ramp today, near full throttle and probably pretty close to red line at the end of the curve the motor started making a very loud tick ( so loud that it's more like a whacking sound ), as soon as I was upright I pulled in the clutch and shut it down. After a couple of minutes I started it again for just a moment and it seems to be much louder from the left side of the engine. Any ideas what might have caused this or what it might be? Of course, the warranty on the shitbox ran out in April so I'll be forking out the dough to fix it out of pocket and needless to say, my wife is none too pleased.
Elite HDF Member
Joined: Jun 2008
Posts: 4,109
Likes: 9
From: Connecticut
sounds like a possable valvetrain issue, pull the top of the rocker boxes and see which valve is loose.could be a lifter went bad. Plus you run any bike like that and hold it there it's not a shitbox when you break it.
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Road Warrior
Joined: Dec 2008
Posts: 1,810
Likes: 4
From: Out and about
Well, I hardly think that I was doing anything that should cause a motor to eat it's self... It wasn't bouncing off the limiter and even if it was the point of a limiter is to protect the engine from things like this. Not everyone wants to ride their bike like a little old lady nor should they have to.
I pulled the drain plug and didn't notice any metal shavings, so hopefully that's a good sign.
I pulled the drain plug and didn't notice any metal shavings, so hopefully that's a good sign.
Tourer
Joined: Apr 2011
Posts: 251
Likes: 0
From: sun valley ca.usa
If it made that much noise when you restarted it then my money is on a dropped/bent valve as you were at the rev limit you might have floated a valve and smacked the piston .......THAT'S gonna cost ya ! I push mine hard too and know what it's like to Pay to play
Tourer
Joined: Apr 2011
Posts: 251
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From: sun valley ca.usa
Sure it can run on 1 cyl with the other one limping along ...I've opened them up after they were ridden in and the piece of valve was broken off and buried in the piston ...still ran ..like **** ...but they rode it in
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HDF Community Team
Joined: Jun 2006
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From: san antonio
+1 on the compensator; look there first as that is a more likely cause than valve to piston contact on a stock bike Yes, inside the primary cover on the crank. Could be just loose, not uncommon. If the compenstor is loose, shave .030" off the end and reinstall with a drop or two of red loctite.