Re: Oil Pressure and...

Posted by JD in KC On 2009/6/29 8:54:06
If the engine is quiet when cold, but starts to 'clack' when warmed up, I'd suspect a worn hydraulic lifter. If you are seeing a lot of oil flow from one lifter while the engine runs, that's probably the lifter with a problem. The oil thins as it warms up and then starts to bypass the worn piston in the hydraulic lifter causing the lifter to 'collapse'. Here's a photo of my 356 with an obvious worn hydraulic lifter (the engine is running).

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