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Runtoeat

Spark Plug Wire Replacement

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Can the plug wire which comes from the coil be replaced?  Is there a sketch or drawing showing what the internals of the plug boot looks like?  Something that shows how the end of the plug wire connects to the component which snaps onto the top of the plug?  One of my plug boots seems to be "wobbly" and doesn't feel as firmly connected onto the spark plug as the other 7.  Looking down inside the boot, it appears that the metal plug connector isn't centered in the boot and seated into the bottom of the boot as the connectors are in the other plug boots. 

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Dick, on my 912, the spark plug boot can be removed from the plug wire and replaced (it "unscrews" from the plug wire).  No need to remove the wire from the coil in order to renew the boot.  

 

For a new 912 plug boot, see:  http://www.lockwood.aero/p-323-suppressed-spark-plug-connector.aspx

 

 

As always, this information is correct for my plane, be sure it is correct for your application.

 

Fred

2006 CTsw

E-LSA 

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Roger and Dick,

 

Just be sure that the ebay part is for plugs with the screw-on plug electrical connector cap removed.  I have read that some are made for plugs with the cap on the plug.

 

fg

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Fred and Roger.  Thanks much for the info. and links. Good to know there's an alternative supplier instead of Rotax where one can buy this part. Would the current wire connection be destroyed if the boot was taken apart to inspect the connection?  I'm not sure I need any new parts or if anything is amiss. Just would like to see if the connection is good inside the boot. Anyone happen to have a picture or drawing of the boot taken apart which shows how the wire connects to the plug connector?

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If you try and take the boot apart you will trash it. You can ohm it out, but that's it. Boots almost never go bad unless someone bends and ruins the inside connection. The answer your original post is yes the plug wire from the coil to the boot can be replaced. They both just screw off. Never use anything, but a metal core wire.

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Thanks Roger.  If you ever get a trashed wire and boot, please send it to me.  I'll cover the postage and your time.  Just would like to see what's inside.

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My WIRE seems loose on the Plug threads so I am wondering if there is info OR  a video showing how to change the plug boots without destroying the ignition wire itself.

boot 2.jpg

boot 1.jpg

boot 3.jpg

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Just unscrew the cap offthe wire. It is only held on by a threaded prong. (Test question) Then trim the wire back 1/4" to 3/8", apply a dab of dielectric grease to the tip and screw the new cap back on. Then replace the small wire tie. Screw the cap all the way down until it stops. You can buy the caps on Amazon for a fraction of what Rotax charges. 

Plug caps can become loose on the plug over a long time, but usually because people don't pull the straight off and wiggle them side to side.

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