by fastj22 » Fri Dec 23, 2011 11:02 pm
Here's how I would trouble shoot it.
Remove a plug from each cylinder.
Get a cheap compression gauge from HF or auto parts store.
Screw it into cylinder #1
Hand turn the prop at least 720 degrees.
That will mak sure you get one compression stroke.
Check the gauge.
If you get a good reading, move it to the next cylinder. Repeat.
If you don't get a good reading, it's either a valve, head or ring issue.
Focus on one cylinder at a time.
I suspect it's probably a valve adjustment issue. If you have them too tight at the rocker, they won't seat properly.
John Gillis
SEL Private, Comm Glider, Tow pilot (Pawnee Driver)
Waiex N116YX, Jabiru 3300, Tail dragger,
First flight, 3/16/2013. 403 hours and climbing.
Home: CO15. KOSH x 5
Flying a B-Model Conversion (Super Bee Baby!)