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FJR Motorcycle Forums
Technical & Mechanical Problems
Engine teardown after 90k miles
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<blockquote data-quote="RossKean" data-source="post: 1351889" data-attributes="member: 19880"><p>If it had been valve clearance related (or simple leaky valves), compression would not have been restored sufficiently by oiling the cylinders to run the bike - especially if a couple cylinders were "near zero". Restoration of compression by oiling is the classical test for leakage from rings vs valves.</p><p></p><p>lele - I would expect ring wear rather than cylinder walls - the FJR cylinders have a ceramic coating that is very hard. As I mentioned, above, rings can be stuck, worn or broken.</p></blockquote><p></p>
[QUOTE="RossKean, post: 1351889, member: 19880"] If it had been valve clearance related (or simple leaky valves), compression would not have been restored sufficiently by oiling the cylinders to run the bike - especially if a couple cylinders were "near zero". Restoration of compression by oiling is the classical test for leakage from rings vs valves. lele - I would expect ring wear rather than cylinder walls - the FJR cylinders have a ceramic coating that is very hard. As I mentioned, above, rings can be stuck, worn or broken. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Engine teardown after 90k miles
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