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FJR Motorcycle Forums
Technical & Mechanical Problems
FJRF001: New Ticking Sound files
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<blockquote data-quote="ionbeam" data-source="post: 1327266" data-attributes="member: 277"><p>Engines with a cam follower and screw with lock nut adjusters will tick as they wear and get louder as they need adjustment. With the screw and lock nut adjuster the valve actuation gets smaller and top end performance falls off without harm to the engine.</p><p></p><p>With a shim/bucket adjustment system like the FJR has the valves will make no noise as the shims wear and valve actuation gets greater until the exhaust valves will no longer fully seat when they should be closed and the subsequent exhaust leak will start to burn the valves and the valve seats. You don't want this to happen.</p><p></p><p>You know that service is needed every 27k miles because that is what Yamaha specifies in their service requirements. As Bobxxxxxx says, he <em>guesses</em> at the noise. It could be that he is hearing the coils fire, the fuel injectors firing, the cam chain or an exhaust leak starting. Or Bobxxxxxx is a troll <img src="https://www.fjrforum.com/forum//public/style_emoticons/default/wink.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>At least he researched the problem before posting as evidenced by his finding this 9 year old thread. That is indeed a good job of searching!</p></blockquote><p></p>
[QUOTE="ionbeam, post: 1327266, member: 277"] Engines with a cam follower and screw with lock nut adjusters will tick as they wear and get louder as they need adjustment. With the screw and lock nut adjuster the valve actuation gets smaller and top end performance falls off without harm to the engine. With a shim/bucket adjustment system like the FJR has the valves will make no noise as the shims wear and valve actuation gets greater until the exhaust valves will no longer fully seat when they should be closed and the subsequent exhaust leak will start to burn the valves and the valve seats. You don't want this to happen. You know that service is needed every 27k miles because that is what Yamaha specifies in their service requirements. As Bobxxxxxx says, he [I]guesses[/I] at the noise. It could be that he is hearing the coils fire, the fuel injectors firing, the cam chain or an exhaust leak starting. Or Bobxxxxxx is a troll [IMG]https://www.fjrforum.com/forum//public/style_emoticons/default/wink.png[/IMG] At least he researched the problem before posting as evidenced by his finding this 9 year old thread. That is indeed a good job of searching! [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
FJRF001: New Ticking Sound files
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