Will this replacement camshaft work in my engine?

Posted on April 8th, 2012 by

Q: I have an O-290-D2 that I am going to use in an Experimental Wag Aero 2+2 that I am building. Although the engine was flying regularly before I removed it from a Pacer and pickled it, I want to... Continue Reading →

Ask Paul: What causes this popping sound?

Posted on March 6th, 2012 by

Q: I am test flying my new RV-9. It has a new Superior O-320, dual p-mags and an MTV11 2-blade MT prop. When it has been running at cruise power for a few minutes or more (say 2,300 rpm x... Continue Reading →

Ask Paul: What’s best? A flush or overhaul?

Posted on February 13th, 2012 by

Q: I recently found paper towel bits and pieces in a Lycoming engine in an aerobatic airplane. The pilot said he saw the oil pressure go to “zero,” so he reduced power, and landed safely. Would you suggest a flush... Continue Reading →

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

Posted on January 25th, 2012 by

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,... Continue Reading →

Ask Paul: Tips to getting Dad’s Pacer flying again

Posted on November 28th, 2011 by

Q: I was reading your explanation on the difference between narrow deck and wide deck Lycomings — what an excellent piece of writing. My interest is that my brother Lee and I have my Dad’s PA-20 and, while stored indoors,... Continue Reading →

Ask Paul: What’s the proper procedure to cycle a prop?

Posted on November 13th, 2011 by

Q: I’m curious about the procedure for cycling a constant speed propeller on run up. Three times seems to be a tradition, but I can’t find anything that supports this as a good habit. Continue Reading →

Troubleshooting a rough-running engine

Posted on October 2nd, 2011 by

Q: My Lycoming TIO-540 engine on my Cessna T206H is running very rough at max power setting. I recently replaced one dud cylinder due to very low compression. The ring gaps were wide and exhaust valve guide and seat were... Continue Reading →

Ask Paul: Should you lean for a sea-level takeoff?

Posted on September 11th, 2011 by

Q: At or around sea level in a non-turbo airplane, like a 152 or a 172, should you lean your air fuel mixture for takeoff? Continue Reading →

Buyer beware

Posted on August 3rd, 2011 by

Please help me! Some of you who know me are probably saying I’ve needed help for years, but this is something even more serious than helping some old guy who’s been in this industry for a long time. I’m asking... Continue Reading →

Ask Paul: What is proper timing for my engine?

Posted on June 14th, 2011 by

Q: I am an Italian homebuilder of a Van’s RV-3. I read on the Internet that you are an expert of Lycoming and I want to impose on your kindness. I am ready to make the timing on my Lycoming... Continue Reading →