Subject	In general aviation with piston powered aircraft
Posted by	DAYTONAZ on July 15, 2006 at 5:40 PM
	This message has been viewed 187 times.
In Reply To	Im still skeptical. posted by Drk93TT on July 15, 2006 at 03:28 PM
Message	Plug cleaning is a regular part of routine maintenance. After cleaning the plugs in a bead blaster the ops check of the plug is performed by placing threading it into a pressure/spark fixture. The fixture has a window so you can specifically watch the spark pattern. Then you attach the electrical lead and start the sparking. At the same time you turn a knob which pressurizes the chamber and you watch the spark. The more pressure the less spark. It has to meet a certain pressure based on the type of plug. That's the way we did it back in my GA days. I don't remember the pressure specs but I can tell you with certainty that if you continued applying pressure to the plug while it was arcing it would snuff the arc out. That would be a good test of the NGK's if anyone wanted to drop by their local FBO and chat with the mtx guys. The thread is different of course between a/c plugs and ours but you could probably rig something to test the plug and find out what psi and gap relationships exist. For now I'll leave mine at .035 as I will see ~20 soon.
Follow Ups	When going up in stages do you need to re-gap your plugs? - BeegsTT 12:22:52 07/15/06 You need to gap the plugs down to prevent misfire. - Ash's Z 12:28:59 07/15/06 i gap mine at .0006~ ...i got mad spark (n/m) - genic 12:41:37 07/15/06 LOL.. Realistically, I doubt you would be able to get it - Ash's Z 13:03:57 07/15/06 Ash- check your paypal. $$ is coming to you. (n/m) - BeegsTT 13:35:54 07/15/06 Email me.. I dont see anything in there from you. - Ash's Z 14:07:26 07/15/06 little do you know PAL....my Z flys! (n/m) - genic 16:49:31 07/15/06 lol genic (n/m) - Drk93TT 18:24:13 07/15/06 You don't. - Dallas DamonZ 14:39:54 07/15/06 Often in supporting my ECU upgrades, customers - Ash's Z 15:10:34 07/15/06 Im still skeptical. - Drk93TT 15:28:37 07/15/06 I would hope that others who are knowledgeable about - Ash's Z 15:52:52 07/15/06 eh... - Dallas DamonZ 16:02:44 07/15/06 Well, we all do what works for us. In probably 90% of - Ash's Z 16:14:14 07/15/06 knowledgeable about misfire huh? - Drk93TT 17:26:34 07/15/06 I only meant that to mean those that have experienced - Ash's Z 20:36:17 07/15/06 In general aviation with piston powered aircraft - DAYTONAZ 17:40:38 07/15/06 Re: Im still skeptical. - docjoneZ 04:43:33 07/16/06 odd. (n/m) - Dallas DamonZ 15:30:41 07/15/06 Not really - it is commonplace. - Ash's Z 15:54:50 07/15/06 read above please. (n/m) - Dallas DamonZ 16:03:55 07/15/06 2nd.............. - Greg D. (Specialty-Z) 16:38:22 07/15/06 I had terrible misfire at WOT and upper RPM's until - robo (sebring1970) 20:18:24 07/15/06 Re: I had terrible misfire at WOT and upper RPM's until - docjoneZ 04:45:54 07/16/06
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