During the last year, my engine monitor, shown below, has had little problems. It’s not the monitor itself, not the sensors on the engine. It’s the wires from the sensors that connect into a little box beneath the dashboard. Sometimes a connection becomes intermittent, so one of the engine temperatures fluctuates from Normal to Low. Sometimes it stays low, like for instance, cylinder 1 might show low Cylinder Head temperature (CHT), but normal Exhaust Gas Temperature (EGT). This particular instance, happened at 10,000 feet altitude, which was for most of the flight, but returned to normal at 4000 feet and below when we were getting ready to land in Camrose.
Lets look at this MVP engine monitor more closel. Here’s the story it tells. It’s been flying for 3 hours and 20 minutes. Fuel is getting down to 25 gallons remaining. (The tanks started this return trip at 88 gallons, nearly full.) Most of the cylinders have CHTs above 300, but not cylinder 1’s sensor wire connection, which is acting flakey. All 6 Exhaust gas temperatures are pretty close-together, slightly cooler than where I usually prefer them. I like to try to get all 6 cylinders to slightly over 1400 degrees F. exhaust gas temperature.