Re: 1935 1202 sedan engine rebuild

Posted by TxGoat On 2024/4/20 21:55:41

With the engine running at idle and warmed up, pulling one spark plug wire at a time may isolate the noise to one cylinder. Pulling the plug wire on a cylinder with a loose rod, wrist pin, or collapsed piston skirt will usually change the "rapping" sound. A persistent miss at one cylinder could point to a stuck valve or broken valve spring.