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  #11  
Old 12-26-2012, 09:46 AM
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LifeofReiley LifeofReiley is offline
 
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Location: Round Rock, TX
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I had a wire to #3 from the Lightspeed plasma II come off on takeoff and the engine acted the same way... might check and make sure all wires from the L/S are on and firmly snapped down tight to the spark plug.

Stuck valve would be my next direction.
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  #12  
Old 12-26-2012, 09:53 AM
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DakotaHawk DakotaHawk is offline
 
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Quote:
Originally Posted by frazitl View Post
a sticking exhaust valve on #2. I would do a wobble test and make sure my push rods on #2were still straight...

Great job getting her down. How did your passenger react?
I pulled the rocker cover and did a wobble test - everything moved, springs were springing properly...

Quote:
A little rough and high EGT may also indicate you are losing ignition to one plug. First thing I would do is check wires, connections etc. and replace plugs on offending cylinder.
Engine was running very rough, and I'm pretty sure it wasn't just one of the two plugs not firing. I did check connections, everything was secure. I pulled both top and bottom plugs and checked gap and cleanliness...

Quote:
Perhaps its the way you wrote the issue, but I got far more concerned about the reaction than I did the problem while reading. Even a completely out cylinder, while feels terrible, is no cause for 'I have to get down now'. Let it stumble, climb and access.
Ummm... My passenger was up for only her second flight. Do you really think that I should have continued the flight with a newbie in the plane when I have a perfectly good airport right under my wing?
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RV-7 N957RV (First Flight on Dec 18, 2009)
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  #13  
Old 12-26-2012, 10:04 AM
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marchudson marchudson is offline
 
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Default Great job

Scott

Great job getting the aircraft on the ground with no problems. Being that low on takeoff with an engine problem, I think you made a wise choice. Get it safely on the the ground then do some troubleshooting.

Glad your ok.
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  #14  
Old 12-26-2012, 10:15 AM
Bavafa Bavafa is offline
 
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Originally Posted by marchudson View Post
Scott

Great job getting the aircraft on the ground with no problems. Being that low on takeoff with an engine problem, I think you made a wise choice. Get it safely on the the ground then do some troubleshooting.

Glad your ok.
Agreed completely, great job and decision to return safely and not take additional risks.

Taking risks and playing with our own lives should be our choice, but playing with our passengers lives should not be our choice.
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  #15  
Old 12-26-2012, 10:19 AM
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Good to here you are ok Grumpy
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  #16  
Old 12-26-2012, 11:28 AM
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Greg Arehart Greg Arehart is offline
 
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Ummm... My passenger was up for only her second flight. Do you really think that I should have continued the flight with a newbie in the plane when I have a perfectly good airport right under my wing?

I agree - better to be safe than sorry, especially with a passenger out for a second flight. No sense scaring her more than already done.

Greg
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  #17  
Old 12-26-2012, 11:34 AM
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Quote:
Originally Posted by DakotaHawk View Post
. . . Ummm... My passenger was up for only her second flight. Do you really think that I should have continued the flight with a newbie in the plane when I have a perfectly good airport right under my wing?

Was it the Stylist? That was a grat video, BTW.
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  #18  
Old 12-26-2012, 11:53 AM
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DakotaHawk DakotaHawk is offline
 
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Quote:
Originally Posted by AltonD View Post
Was it the Stylist? That was a grat video, BTW.
Not the stylist this time. This is a young lady who does some part-time work for one of the local FBOs. (ps. She's not the one in the red suit!)

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  #19  
Old 12-26-2012, 12:17 PM
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9GT 9GT is offline
 
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Quote:
Originally Posted by Kahuna View Post
A cylinder miss & rising egt should be no cause for alarm or need for a cool head. Pulling power, pushing the nose over and dropping flaps and heading back to the runway really kept you from determining what the problem was. There was more sleuthing to do.
There are a number of items that could be the cause as others have mentioned.

Perhaps its the way you wrote the issue, but I got far more concerned about the reaction than I did the problem while reading. Even a completely out cylinder, while feels terrible, is no cause for 'I have to get down now'. Let it stumble, climb and access.

A nice pattern while troubleshooting would help pinpoint the problem. You could simply have a fouled plug, bad plug, intake leak, ign wire, plugged injector, or a number of other items. Some of these are difficult to troubleshoot on the ground.
No thanks. I also prefer to do my trouble shooting on the ground.
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  #20  
Old 12-26-2012, 01:23 PM
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LettersFromFlyoverCountry LettersFromFlyoverCountry is offline
 
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Quote:
Originally Posted by DakotaHawk View Post
What's an injector check?
Follow the stainless line from the fuel spider on the top of the engine to the offending cylinder on top. Loosen the nut (I think it's a 3/16") and carefully pull out the small injector from the flared end. Check to see if some contamination might've partially blocked it...maybe stick some small safety wire in it. Reinstall.

I had the problem you describe and started pulling everything off the engine and the last thing we checked -- the small injector on the top of the cylinder (I have Lightspeed on the top) had a VERY small piece of junk (it looked like a piece of SuperFil about the size of a pencil head) blocking it.... so fuel wasn't getting into the top...which accounted for the high EGT on my cylinder.

The engine has run great since then.
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