Ask Paul: Wide deck vs. narrow deck engines

Posted on October 7th, 2009 by

I recently received a question from a friend of a friend in Texas regarding the difference between a “Narrow Deck” and a “Wide Deck” Lycoming engine. This has been confusing to many, so let’s see if I can shed some... Continue Reading →

Which cylinder is where?

Posted on September 10th, 2009 by

Q: Over the last three years of annuals I have had three different mechanics. The mechanic does the compression check, calls out the cylinder number and I record the values. It appears to me that the mechanics might be confusing... Continue Reading →

Tips to reduce spark plug fouling

Posted on September 2nd, 2009 by

Q: In my pilot club meeting last month, a pilot complained of spark plug fouling before takeoff in our Grumman Cheetah with 150-hp Lycoming. I suggested that after starting the engine, and before taxiing, she lean the mixture, keep it... Continue Reading →

A ploy to sell more engines?

Posted on August 28th, 2009 by

Q: While TBO is recommended as 2,000 hours or 12 years, whichever comes first, the brokers trying to sell me a used plane always belittle that second limitation, chalking it up to Lycoming wanting to sell more rebuilds. Can you... Continue Reading →

Ask Paul: Tips to help you save money

Posted on January 27th, 2009 by

The bad news: There really isn’t much you can do to run an engine much more frugally than you do during the normal course of operation. The good news: There are a few things you can do to keep operating... Continue Reading →

Why can’t I find Service Instructions online?

Posted on February 22nd, 2008 by

I just checked the Service Instruction list at Lycoming’s website and SI 1294, which you referred to in the Jan. 25 GAN (What do to about a “”slightly”” rough running engine), is not listed. Continue Reading →

Engine exhaust creates unsafe condition for Colt owner

Posted on February 8th, 2008 by

My Piper Colt has a strong odor of engine exhaust in the cockpit. The mechanic says he is sure the muffler is good, and turning off the heater does not change the amount of odor. Continue Reading →

What to do about a ‘slightly’ rough running engine

Posted on January 25th, 2008 by

I always look forward to hearing what you have to say, so here is my question: I fly a 1954 Piper PA-22/20 with an O-320 (no suffix) Lycoming, with about 975 hours since major. I fly it 150 to 175... Continue Reading →

Is a factory rebuilt engine reliable?

Posted on January 11th, 2008 by

I probably will buy a C-172 with a new — actually rebuilt — O-310-H2AD engine. Do you know if this engine is reliable? Does it meet the latest factory changes? Continue Reading →

There are no stupid questions… Just unusual ones that, unfortunately, don’t have the desired answer

Posted on December 21st, 2007 by

This seems like a stupid question but I’m going to ask anyway. Did Lycoming ever have a service kit to put hydraulic lifters into the O-235? Continue Reading →