The Stovebolt Site Forums The Shop Area Driveline Engine noise

WARNING!!!! Please be absolutely positive this is not an exhaust leak. I have had exhaust leaks/manifold leaks that sound like horrible internal engine noises. Also something rattling at it's natural frequency. Some sheet metal piece or component. While it's making "funny noise" use a broom stick to "listen". Touch one end to every part of engine and other areas and put other end near ear. When you find location, sometimes you can quiet it by pushing on it. Or maybe change the tone. That gives you a good start to figuring it out. Please describe what "funny noise" means exactly. I hope it is just something vibrating or exhaust leak. If it's a "tinny" rattle, that's loose metal (good). If it's "knocky" that could be exhaust leak (good) Depends if broom stick says valve cover or pan or block or bell housing or.. It can also be spark knock which is a timing issue or possibly carb. Bottom line: No need to panic and start tearing everything apart, remember you say all parameters are good. Be gentle with driving/running it until diagnosed.