Summer time has finally arrived and temperatures are increasing. My CHT on #6 is on takeoff getting to 420 degrees F despite going to 120 knots cruise climb. The other CHTs are 30-50 degrees F cooler. EGTS are about the same. Baffling is okay. Any ideas how to get this cylinder cooler?
Thomas-If the baffling is tight and no other obstructions are there you might check the fuel injector for that cylinder. Might be clogged? If it is clean, I would borescope to make sure nothing is going on with the exhaust valve.
Let us know what you find. I normally see on hottest days CHT’s at 380 or so as you referenced.
If this is a new issue, then yes, it might be a clogged injector. It is summer now so outside temperature does affect things like this too.
If any work was done on the engine (or an annual was just completed) you might also check the baffling. Even if none was replaced, sometimes they get moved backwords or torn. Silicon baffling should bend forwards so that it doesn’t allow air to pass over it.
The other item to inspect are the cowl flaps for proper operation. If they’re not opening as much as they should then they need to be repaired.
The issue is rather constant. Injector and line is clear. Baffling is in good condition, but #6 is in a bad spot. Taped the oil fill door. No effect. I will post some pictures.
Did some cross-country (10h in 3 days) in 90° weather because of