What’s causing Mooney’s rough-running engine?

Posted on September 17th, 2013 by

Q: I bought an older Mooney with a Lycoming IO-360 with Bendix fuel servo. The engine starts to run rough once the last 1/2 inch of throttle is given. An induction leak cannot be located. Would a faulty sniffle valve... Continue Reading →

Does flight school’s 172 need new rings?

Posted on August 14th, 2013 by

This question was initially sent to our fuels and oil expert Ben Visser, who passed it on to our engines expert Paul McBride for further comment. Q: Our flight school has a Cessna 172N with an O-320 H2AD. The engine... Continue Reading →

Ask Paul: Upgrading to a wide deck engine

Posted on July 7th, 2013 by

Q: I read your article from the Oct .7, 2009, issue of General Aviation News on Wide Deck vs. Narrow Deck Lycomings with great interest. I am trying to figure out one detail that I think your article answers, but... Continue Reading →

Ask Paul: The Cherokee Rattle

Posted on June 5th, 2013 by

Q: I just bought a 1974 300-hp Cherokee Six. It has about 1,200 hours to run, has great oil pressure, good compressions, hardly uses oil, no metal in the filter, but during the run-up at 2,000 rpm, the engine makes... Continue Reading →

What are the best options for overhaul?

Posted on May 8th, 2013 by

Q: My question seeks your advice about an overhaul on our Lycoming O-320-H2AD. As background, we have a 1980 C172N that’s been owned since new. It’s always been hangared, never been a flying club or training airplane, is not used... Continue Reading →

Ask Paul: How do I know if this AD applies to my engine?

Posted on April 3rd, 2013 by

Q: I’ve heard there is an AD that prevents various Lycoming engines from being signed off as airworthy if the TBO is exceeded. I’ve also heard it doesn’t apply to engines manufactured prior to 1970. If the engine was original... Continue Reading →

Ask Paul: What is causing sticking valve?

Posted on March 4th, 2013 by

Q: In 2004, I bought a Lycoming O-320 D1A, via Van’s, and started flying it in January 2005 in a RV-9A. I broke it in according to the instructions (75% or more until oil consumption stabilized). In spite of having... Continue Reading →

Ask Paul: Why is my Beagle Pup such a pig to start?

Posted on February 5th, 2013 by

Q: I have a Beagle Pup 150 (the father of the Scottish Aviation Bull Dog) fitted with a Lycoming O-320 engine. When the weather is cold — in the UK this is anything less than 5° C — it has... Continue Reading →

Ask Paul: Why are my #3 cylinder CHTs so high?

Posted on January 8th, 2013 by

Q: Recently — 50 hours ago — I had a Lycoming O-360-A4A overhauled with new ECi Titan steel cylinders installed. The #3 cylinder has had high-ish CHTs from the beginning. Continue Reading →

PaulMcBride

Ask Paul: What are these aluminum specks?

Posted on December 10th, 2012 by

Q: I lost the left mag on my O-540. When I took it apart, I found four aluminum specks in the top oil screen. I pulled the rear housing off and found the aluminum gear still in the engine. I... Continue Reading →