I had an old Ford Mechanic show that to me about 25 years ago. What a coincidence. I bought a Cherokee 150 and had one cylinder showing low compression. The engine is pretty low time. A&P mechanic threw out an outrageous bill. Couple of hammer hits later and what do ya know, a rebuilt cylinder for no cost at all.
I have seen all kinds of so called short cut tricks in the past that never worked, but that one does. Jeff York KR-2 Flying N839BG Home page http://web.qx.net/jeffyork40/ My KR-2 http://web.qx.net/jeffyork40/Airplane/ to see my KR-2 Email jeffyor...@qx.net ----- Original Message ----- From: <jscott.pi...@juno.com> To: <kr...@mylist.net> Sent: Saturday, November 26, 2005 7:51 PM Subject: Re: KR> The Fix > > That is known as "Staking" the valve. Pretty common practice to fix a > leaky valve if it has a deposit built up on the face. As Bob said, > sometimes you have to soak them up in MMO to loosen the deposits. > > Jeff Scott > > > On Sat, 26 Nov 2005 17:58:37 -0600 "Robert L. Stone" <rsto...@hot.rr.com> > writes: > > Netters, > > I had a pre-buy inspection done on my Cessna 152 and during > > the > > compression check the mechanic found one cylinder was showing only > > 47 > > pounds. Another mechanic did something I have never heard of > > before. He > > said that sometimes there will be a carbon buildup on the seal of > > the > > exahust valve and cause it to not close all the way and seal on the > > > > compression stroke as it is supposed to do. He took a large rubber > > mallet > > and smacked the roker arms a few times after removing the cover of > > course > > and now that cylinder is showing 74 pounds. Just a few strokes with > > a > > rubber mallet was all it took to jar the carbon off of the seal. I > > could > > see an expensive repair bill for grinding valves, replacing rings or > > > > possibly the entire cylinder so I thought you guys aught to know > > about this > > fix. > > > > Bob Stone, Harker Heights, Tx > > rsto...@hot.rr.com > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
