Runtoeat Posted January 6, 2015 Report Share Posted January 6, 2015 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. Quote Link to comment Share on other sites More sharing options...
FredG Posted January 6, 2015 Report Share Posted January 6, 2015 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 Quote Link to comment Share on other sites More sharing options...
Roger Lee Posted January 6, 2015 Report Share Posted January 6, 2015 Here you go: $11.15 NGK VD05FMH http://www.ebay.com/itm/NGK-Spark-Plug-Cap-VD05FMH-8425-/321612179542?pt=Motors_Car_Truck_Parts_Accessories&hash=item4ae1946856&vxp=mtr Rotax price is $53 Quote Link to comment Share on other sites More sharing options...
FredG Posted January 6, 2015 Report Share Posted January 6, 2015 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 Quote Link to comment Share on other sites More sharing options...
Roger Lee Posted January 6, 2015 Report Share Posted January 6, 2015 NGK code chart http://www.ngksparkplugs.com/techinfo/spark_plugs/partnumberkey.pdf http://www.ngk.de/fileadmin/Dokumente/EN/downloads_not_used_in_download_area/ngk_zuendkerzen_code_en.pdf Quote Link to comment Share on other sites More sharing options...
Runtoeat Posted January 7, 2015 Author Report Share Posted January 7, 2015 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? Quote Link to comment Share on other sites More sharing options...
Roger Lee Posted January 7, 2015 Report Share Posted January 7, 2015 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. Quote Link to comment Share on other sites More sharing options...
Runtoeat Posted January 7, 2015 Author Report Share Posted January 7, 2015 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. Quote Link to comment Share on other sites More sharing options...
Greg Posted January 8, 2015 Report Share Posted January 8, 2015 Try this diagram. http://www.ngksparkplugs.com/docs/resistor_covers.pdf Quote Link to comment Share on other sites More sharing options...
Runtoeat Posted January 8, 2015 Author Report Share Posted January 8, 2015 Greg, that's what I'm looking for. Thanks. Quote Link to comment Share on other sites More sharing options...
DJ Todd B Posted September 25, 2021 Report Share Posted September 25, 2021 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. Quote Link to comment Share on other sites More sharing options...
Roger Lee Posted September 25, 2021 Report Share Posted September 25, 2021 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. Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted September 25, 2021 Report Share Posted September 25, 2021 Here is a link to the new sparkplug boots. https://www.amazon.com/dp/B0068O7NSE?psc=1&ref=ppx_yo2_dt_b_product_details Quote Link to comment Share on other sites More sharing options...
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