---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Tue 04/15/25: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:49 PM - Re: CJ6A/Housai magneto question(s) (Justin Drafts) 2. 03:08 PM - Re: Re: CJ6A/Housai magneto question(s) (Jon Boede) 3. 04:48 PM - Re: Re: CJ6A/Housai magneto question(s) (Greg Wrobel) 4. 05:05 PM - Re: Re: CJ6A/Housai magneto question(s) (Mark Bitterlich) ________________________________ Message 1 _____________________________________ Time: 02:49:55 PM PST US From: Justin Drafts Subject: Yak-List: Re: CJ6A/Housai magneto question(s) Okay my fellow mechanics, a (?) for you all. Forgive my ignorance but avionics is not my strong point. I'm having trouble w/ my CJ6 standard Housai magnetos... on run-up one day the mag drops were perfect, textbook... the next day until now mag #1 shows 300~400 drop & obviously rough running. (Mag #2 still purrs perfectly, using mag switch on 1+2 the engine runs well.) Momentarily switching to 0 cuts engine, as it should. Wiring all appears intact. Magnetos are freshly cleaned & in great condition upon cursory inspection; aggressive leaning doesn't help & all 18 sparkplugs recently pulled & cleaned. All leads appear in good condition. Aft row's 8 sp's good on tester, testing front row 8 this afternoon. Thoughts, inputs, advice??? Mag #1 controls the AFT row of sparkplugs, or the FWD row? Mag #1 is (looking forward from cockpit) the right-side mag, correct? Thanks all... Justin Drafts N280NC, Seattle ________________________________ Message 2 _____________________________________ Time: 03:08:56 PM PST US From: Jon Boede Subject: Re: Yak-List: Re: CJ6A/Housai magneto question(s) Best to ring it out. I have seen these wires all sorts of ways, including front and back being opposite. Just need to put an ohm meter between the p-lead and ground. > On Apr 15, 2025, at 4:57PM, Justin Drafts wrote: > > > Okay my fellow mechanics, a (?) for you all. Forgive my ignorance but avionics is not my strong point. > I'm having trouble w/ my CJ6 standard Housai magnetos... on run-up one day the mag drops were perfect, textbook... the next day until now mag #1 shows 300~400 drop & obviously rough running. > (Mag #2 still purrs perfectly, using mag switch on 1+2 the engine runs well.) Momentarily switching to 0 cuts engine, as it should. Wiring all appears intact. > > Magnetos are freshly cleaned & in great condition upon cursory inspection; aggressive leaning doesn't help & all 18 sparkplugs recently pulled & cleaned. > All leads appear in good condition. > Aft row's 8 sp's good on tester, testing front row 8 this afternoon. > > Thoughts, inputs, advice??? > > Mag #1 controls the AFT row of sparkplugs, or the FWD row? > Mag #1 is (looking forward from cockpit) the right-side mag, correct? > > Thanks all... > > Justin Drafts > N280NC, Seattle > <20250414_132952.jpg> ________________________________ Message 3 _____________________________________ Time: 04:48:14 PM PST US From: Greg Wrobel Subject: Re: Yak-List: Re: CJ6A/Housai magneto question(s) You said you checked your wires. I had a similar issue years ago. I ohmed the wires and ask was well. I rechecked the wires again and found a ziptie missing allowing the #2 wire to come in contact with the exhaust. It burnt through and was grounding out on occasions. Repaired the wire, double zip tied it away from the exhaust and wa-la. On Tue, Apr 15, 2025, 17:11 Jon Boede wrote: > > Best to ring it out. I have seen these wires all sorts of ways, including > front and back being opposite. Just need to put an ohm meter between the > p-lead and ground. > > > On Apr 15, 2025, at 4:57=AFPM, Justin Drafts > wrote: > > > > =EF=BB > > Okay my fellow mechanics, a (?) for you all. Forgive my ignorance but > avionics is not my strong point. > > I'm having trouble w/ my CJ6 standard Housai magnetos... on run-up one > day the mag drops were perfect, textbook... the next day until now mag #1 > shows 300~400 drop & obviously rough running. > > (Mag #2 still purrs perfectly, using mag switch on 1+2 the engine runs > well.) Momentarily switching to 0 cuts engine, as it should. Wiring all > appears intact. > > > > Magnetos are freshly cleaned & in great condition upon cursory > inspection; aggressive leaning doesn't help & all 18 sparkplugs recently > pulled & cleaned. > > All leads appear in good condition. > > Aft row's 8 sp's good on tester, testing front row 8 this afternoon. > > > > Thoughts, inputs, advice??? > > > > Mag #1 controls the AFT row of sparkplugs, or the FWD row? > > Mag #1 is (looking forward from cockpit) the right-side mag, correct? > > > > Thanks all... > > > > Justin Drafts > > N280NC, Seattle > > <20250414_132952.jpg> > =========== =========== =========== =========== =========== > > ________________________________ Message 4 _____________________________________ Time: 05:05:14 PM PST US Subject: Re: Yak-List: Re: CJ6A/Housai magneto question(s) From: Mark Bitterlich SW5mcmEtcmVkIHRlbXAuZ3VucyBhcmUgZXh0cmVtZWx5IGhlbHBmdWwgaGVyZS4gUnVuIGl0IG9u IHRoZSBiYWQgbWFnIGZvciBhIGZldyBtaW51dGVzLiBOb3QgbG9uZywganVzdCBhd2hpbGUuIEtp 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