The future of fuel

“We have to stop loving the problem and just fix it.” Those words, spoken by Lycoming’s Michael Kraft at the 2010 AirVenture, may sum up best the quest to find an unleaded replacement for 100LL.

Ostensibly, the industry has been working since the early 1990s towards finding a solution, but efforts didn’t really get serious until a few years ago. [Read more…]

Ask Paul: What is the correct timing for my engine?

PaulMcBride

Q: I have a Lycoming IO-360-A1A on a Mooney E model. My mechanic tells me that there are two timing settings for this engine: 20° and 25° BTC. The engine had been set at 20° BTC and he reset it at 25° BTC. What are the advantages or disadvantages of this timing change? The engine is running slightly warmer and appears to be a bit louder in the cockpit.

DAVID WALKER, via email

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Ask Paul: Why is my spark plug oil-fouled?

Q: I have been noticing an intermittent miss on the left mag during mag checks on the O-235L2C in my 1981 Cessna 152 (about 670 SMOH that included new Lycoming cylinders and pistons). About 30 hours ago when I cleaned, regapped, and rotated the plugs, I found that the lower plug on the #4 cylinder was filled with oil around the inner electrode and ceramic insulator. [Read more…]