Pelican Parts

996 very loud intermittent rattle/knock

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YOUR RESEARCH996 very loud intermittent rattle/knock

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3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Pelican Parts: 1 discussions

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POST 1 / ORIGINAL POSTEROriginal post

I really need the help of somebody who is experienced with the 3.4 996 engine. I purchased this car about a week ago, it has a very loud intermittent tap, unlikely it's the IMS as it's been upgraded to the LM bearing. one minute it'll start and purr like a kitten the next minute it'll sound like the engine is full of rocks. No loss of power, drivability issues, smoke, check engine light, oil consumption just the noise . Also the sound of the noise increases with arise an RPM . These videos were taken five minutes apart?!? https://youtu.be/T9D_GE0eR-k https://youtu.be/ofqqYNlsE2U

POST 2 / ORIGINAL POSTEROriginal post

I ran it again with the front belt off... https://youtu.be/UqTdXzIw6O8 The noise seems to be originating from the oil scavenge pump on the passenger side

POST 3Original post

The pump has probably ingested some debris. Not uncommon.

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