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Valve cover gasket (Half moon) popping out

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 changed the oil and went for a 10min ride noticed wind blowing on my leg, half moon had popped out. Took valve cover off and reinstalled it, popped out again after 2mins. I thought I would ask the pros before attacking it myself.

the bike is an 08 wr450f. Could it be a blocked breather hose or is it because there's no silicone on the gasket?

WP_20170531_16_19_37_Pro.jpg

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likely to be a pinched / block breather

The siliconce only stops the oil weep at the corners of the half moon. In no way does it 'bond' it in place

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2 hours ago, GuyGraham said:

likely to be a pinched / block breather

The siliconce only stops the oil weep at the corners of the half moon. In no way does it 'bond' it in place

Thanks for that, ill have a good look when I get home tonight.

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