In the tightly cowled engine compartment of an E/A-B aircraft, exhaust systems can do unseen damage over time unless care is taken to protect various components. In this case, the intake tube hose on a Lycoming engine shows severe signs of overheating due to its proximity to the exhaust system. When touched, it was very brittle and started flaking apart. Left unchecked, it will eventually cause an intake leak and the cylinder will run lean.
In Case You Missed It
Case Parting Plates
A low-cost, effective method for separating stubborn Lycoming O-290 case halves using homemade parting plates and basic hardware.
The Home Machinist
If you need to send a part out to be built by a professional shop, a good drawing, well identified, is essential. The KISS principle applies, and be sure you don't request closer tolerances or more exotic materials than you really need, or it will cost you.
Error Chain
Bryan Jones - 0
Intake valve failure-sudden engine problems lead to an unexpected landing under a 300-foot ceiling. By Bryan Jones.

![Fuel Follies [Credit: Lisa Turner]](https://www.kitplanes.com/wp-content/uploads/2026/02/Fuel-Selector.jpg?w=218&h=150&crop=1)











