Re: 23rd Series 356 Engine Noise

Posted by Dave Kenney On 2007/7/16 16:17:12

Does the noise happen all the time or when the engine is cold? hot? Valve lifter may be defective and you should be able to isolate the noise with a stethescope or a piece of rubber hose. If it's the lifter you will have to remove the head and remove the valve to lift out the assembly. If it's sticking you might try running a can of Seafoam or even a quart of tansmission fluid in the oil for a couple of hundred miles and see if that will clean it up.