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General Minitrail Talk
Tech Area
Verify Oil Pump Flow - Top End Noise
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<blockquote data-quote="69ST" data-source="post: 185909" data-attributes="member: 5"><p>There's an easier, if somewhat cruder, test. Once the oil pump has been primed...and it should be by now...pull the lower rocker cover, wipe it dry, reinstall it, then kick the engine over a few times. If you see oil pooled in the cover, oil is flowing as it should.</p><p></p><p>I've seen many worn out engines with oil pump problems. The problem is usually binding...due to lack of maintenance. And the problem usually manifests as worn teeth on the oil pump drive sprocket. If you verified that the pump was spinning freely during assembly and the drive shaft is correctly indexed, oil flow should be fine. If there were enough dirt to obstruct the metering orifice that controls oil flow to the top end, it would be a first.</p></blockquote><p></p>
[QUOTE="69ST, post: 185909, member: 5"] There's an easier, if somewhat cruder, test. Once the oil pump has been primed...and it should be by now...pull the lower rocker cover, wipe it dry, reinstall it, then kick the engine over a few times. If you see oil pooled in the cover, oil is flowing as it should. I've seen many worn out engines with oil pump problems. The problem is usually binding...due to lack of maintenance. And the problem usually manifests as worn teeth on the oil pump drive sprocket. If you verified that the pump was spinning freely during assembly and the drive shaft is correctly indexed, oil flow should be fine. If there were enough dirt to obstruct the metering orifice that controls oil flow to the top end, it would be a first. [/QUOTE]
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Verify Oil Pump Flow - Top End Noise
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