High EGT, One Cylinder Only, Full Power Climb

How to keep the Cessna 170 flying and airworthy.

Moderators: GAHorn, Karl Towle, Bruce Fenstermacher

Post Reply
User avatar
jrenwick
Posts: 2045
Joined: Thu Apr 01, 2004 8:34 pm

Post by jrenwick »

blueldr wrote:On those airplanes that had the ignition harness firing "half and half", I would strongly suspect that someone installed a harness designed for one of the larger Continental engines. such as the O-470. New harnesses generally have each wire marked for the proper plug position. Harnesses for the C-145/O-300 are marked differently than those for the big bore engines. Since either size engine may use the same mags, It's possible someone installed the wrong harnesses.
That seems very plausible. In my particular case, the harness isn't marked. I'm going to replace my mags soon, and I'll install the new ones per the O300 book.

Thanks!

John
Top
Post Reply

Return to “The Hangar”

Cessna® is a registered trademark of Textron Aviation, Inc. The International Cessna® 170 Association is an independent owners/operators association dedicated to C170 aircraft and early O-300-powered C172s. We are not affiliated with Cessna® or Textron Aviation, Inc. in any way.