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Technical
What's this knocking noise? (with video)
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<blockquote data-quote="chug" data-source="post: 576813" data-attributes="member: 22746"><p>Take belt off and run for a (very) short while to eliminate generator/ alternator or fan.</p><p></p><p>Valve clearances as suggested.</p><p></p><p>Oil change, with the old oil in a washing up bowl or similar, spin it with your finger and see if there is any shimmering to it, suggesting bearing or other component break down.</p><p></p><p>Does it disappear when revved? I've just had the same sort of knock which started as a valve type tapping, after stripping the engine down I found one of the cam bearings had munched itself.</p><p></p><p>I did also find in mine a load of brass filings which looked like the distributor drive gear, the gear was fine so put it down to a previous gear failure which someone didn't clean up properly leaving the brass particles in oil galleys and the oil cooler which they didn't change.</p><p></p><p>Hopefully yours is just a simple oil change and valve adjustment <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="chug, post: 576813, member: 22746"] Take belt off and run for a (very) short while to eliminate generator/ alternator or fan. Valve clearances as suggested. Oil change, with the old oil in a washing up bowl or similar, spin it with your finger and see if there is any shimmering to it, suggesting bearing or other component break down. Does it disappear when revved? I've just had the same sort of knock which started as a valve type tapping, after stripping the engine down I found one of the cam bearings had munched itself. I did also find in mine a load of brass filings which looked like the distributor drive gear, the gear was fine so put it down to a previous gear failure which someone didn't clean up properly leaving the brass particles in oil galleys and the oil cooler which they didn't change. Hopefully yours is just a simple oil change and valve adjustment :D [/QUOTE]
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What's this knocking noise? (with video)
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