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macross

My wr 400 rattles like a bag-a-rattles

8 posts in this topic

My Wr 400 rattles.....I know they do a bit, mine seems to more than most !......2 types of rattles in fact.....the clutch, normal, & another that seems to be at the top end.....Im new to thumpers, its 2000 model & ive only been on the bike a couple of weeks so it's all quite new !!!!!!!! any advise ?.........please :)

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Thanx mate. :D........it just makes me feel concerned when your used to 4 cylinder 4 stokes running like silk, I must say it does get quieter as you go !!! :)

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None of my WRs ever rattled... I remember once when I had my CR250 my bike vibrated really bad and even rattled.. It turns out that the spokes were loose.. :) I tightend them up and no more rattle or vibration... It can't hurt to check... :D

Dan

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Check your Cam Chain. My 98 WR 400 wore out a cam chain before the piston and rings.

You can confirm by pulling the cam over and see if the chain has been slapping it and leaving marks.

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I noticed a rather loud rattle after I put on a GYRT insert, before that it was too loud to hear anything. No one I knew could put a finger on it so I decided if it breaks...... well I'll know what it was then.

At an event, I started listening to all WR's and noticed that 9 of 10 rattled to varying degrees, most not a severe as mine, some worse. From that info, I mistook the rallte as normal.

Finally toward the end of this summer, about 1000 miles later, an intake valve broke. Damage incurred: about $1400.00 in parts.

If you don't find the problem elsewhere, I suggest you remove the head and have an expert give it a once over. Or wait like I did and pay the ultimate price. Although you don't hear much of broken WR/YZF valves here on TT, it appears to be not too uncommom after talking to mechanics and specialty shops.

x2

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