Viking Aircraft Engines replied to William Batten's discussion Altitude Compensation - Fuel Mixture
"The modern engines do not care what altitude they are at. The engines do not “know” what altitude they are at. They do not need this information.

The engine “Know” what the temperature and manifold pressure is. From this, the correct amount of…"
Jan 23
William Batten replied to William Batten's discussion Altitude Compensation - Fuel Mixture
"Thanks. How about the Turbo 195 - does it lean with altitude like the 130?

Bill"
Jan 23
Viking Aircraft Engines replied to William Batten's discussion Altitude Compensation - Fuel Mixture
"Only if you would like to do so. The engine will start and warm up on its own."
Jan 23
William Batten replied to William Batten's discussion Altitude Compensation - Fuel Mixture
"Thanks! I have another newbie question. Since the Viking engine is built to automotive tolerances regarding piston to cylinder clearance - is preheating required in cold weather?"
Jan 23
Viking Aircraft Engines replied to William Batten's discussion Altitude Compensation - Fuel Mixture
"Yes, it does that and there is no altitude limit for this"
Dec 6, 2020
William Batten posted a discussion
I'm new to this forum and new to Viking Engines. I'm early in my research. My question is: Does a Viking 130 engine reduce the fuel rate automatically through the ECU as altitude increases - to lean out the mixture? If so, is there an altitude limit…
Dec 6, 2020
William Batten is now a member of Viking Aircraft Engine Forum
Aug 11, 2019