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gzed · 10-13-2015, 05:47 PM

Hi All,

I have a 2006 gz250 with 4500 miles that has a metallic tapping noise. I used a mechanic's stethoscope and it seems to be coming from the exhaust valves. I adjusted the valves to spec but the sound is unchanged.

Everything else about the bike is great, it has good acceleration, starts up fine, and has a solid idle. I have read through this forum trying other suggestions, even checked the cam chain tensioner. I thought it could be a loose cam chain slapping the engine wall, but no.

Is there anything else you guys can think of checking before I try to pull the head and take a peek inside? Thank you in advance!

10-13-2015, 05:47 PM	#1
gzed Junior Member Join Date: Oct 2015 Posts: 13	Valve Issue? Hi All, I have a 2006 gz250 with 4500 miles that has a metallic tapping noise. I used a mechanic's stethoscope and it seems to be coming from the exhaust valves. I adjusted the valves to spec but the sound is unchanged. Everything else about the bike is great, it has good acceleration, starts up fine, and has a solid idle. I have read through this forum trying other suggestions, even checked the cam chain tensioner. I thought it could be a loose cam chain slapping the engine wall, but no. Is there anything else you guys can think of checking before I try to pull the head and take a peek inside? Thank you in advance! Login or Register to Remove Ads Last edited by gzed; 10-13-2015 at 05:51 PM.
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