KwakNut
Senior Member
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SuzukiSavage.com Rocks!
Posts: 332
Sheffield, England, mostly.
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Does this mechanic work in a circus, wearing a lot of make-up, a curly red wig and long shoes? Because if you want to get quality advice like his again, I suggest you find another clown.
The Savage has a low-compression flat top piston and a low-lift cam, so the valves get nowhere near the piston. Even if you had a sticking valve (which you can’t have if the motor is running okay apart from the noise), you would fix the problem not do what this eejut has recommended.
Your noise could be one of several things. If it is really a knocking rather than a tapping, then it may be a bearing – big end or little end of the conrod, or bad piston slap if your bore is damaged and/or broken ring, but you’d get bad running if this were the case.
If it’s a loud tapping rather than a knock, it could be a more common problem with the Savage, relating to the cam or cam chain. The cam chain adjuster is a common problem, or oil feed to the top end could have been bad at some time (due to low oil) and your cam may have eaten deep grooves into the followers (but if you’ve checked the valve adjustment and it wasn’t way out, it’s probably not this).
If your engine is running okay apart from the noise, and it’s knocking, it’s a bearing. If it’s a more tinny tapping noise it could be cam/followers, if it’s more rattly it could be the cam tensioner has failed – but generally this would end up in the bike eating metal and not running. Might also be worth checking the decompression mechanism.
I suggest you find another mechanic (don’t go back to this guy, because what he’s advised is beyond the realms of mere mortal incompetence – he’s up there with the demi-gods of buffoonery), and get a second opinion as to whether it’s a bearing knock or a top-end problem.
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