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Old Oct 08, 2012, 01:24 PM
Thermalin is offline
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I'm a pilot, 100 yrs too late
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Question

Looking for 4S Hot Glow Plug


Looking for a 4 stroke "hot" plug but cannot find one?
Also my 4 stroke magnums seem to run better, idle better with hot plugs. Do 4 strokes like hot plugs better than medium or is it "cool" plugs?

My issue is idle in an inverted 4 stroke and I read at the bottom hotter is better in this case?

Found this.. seems most helpful
http://www.scootworks.com/rdrc/gloplugs.html
Last edited by Thermalin; Oct 08, 2012 at 01:29 PM.
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Old Oct 08, 2012, 01:32 PM
600Bob is online now
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The OS F is a very popular plug for 4 stroke.
Old Oct 08, 2012, 01:37 PM
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I think you could use a automatic glow igniter. When you bring your throttle down to idle it automatically puts power on your glow plug. It will improve idle and make starting a breeze.
Old Oct 08, 2012, 04:43 PM
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Merlin make a four stroke plug that is a little "hotter" than the O.S. F.

Could be worth a try.
Old Oct 08, 2012, 05:00 PM
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Who Dat!
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the "hottest" 4 stroke plug i ever used was a Fox Miracle. good plug for running inverted.
Old Oct 08, 2012, 10:32 PM
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Merlin 2010, has cured a lot of 4S engine running issues for me.
Old Oct 09, 2012, 09:01 PM
Thermalin is offline
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I'm a pilot, 100 yrs too late
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thanks.. i'll look up the merlin..

http://www.merlinglowplugs.com/Aircraft.html

13 beans shipped for one plug
Old Oct 09, 2012, 10:42 PM
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O.S. "F" plugs seemed to smooth out my Saito 90TS compared to the stock supplied plugs.
Old Oct 10, 2012, 01:11 PM
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Call and ask him about the free shipping for minimum orders, I think he still does it.
Saved me a lot of cash.


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