I started having a whistle under the hood. It sounds like a tea kettle, but not quite as loud... the pitch never changes with rpm's. So far it's only done it with a warm engine. It's not all the time, and when it does do it, it keeps on till I shut it down... . wait 5 seconds and re-start and it's gone..... jack it up to 2500RPM, it's back
I'm thinking air leak somewhere, what are some other ideas? I have no gauges on a stock engine. Thanks for any help.
