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John Deere Tractors Discussion Forum
Show Parts for Model:

Topic: autolite plug for mod H
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Author  [Modern View]
jdub

08-14-2012 13:14:45
75.119.32.192



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Hi all. Does anyone know what the no. is for the 'hottest' Autolite plug available for a '41 mod H. Thanks

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davediehl@hotmail.com

08-14-2012 16:46:23
173.30.211.28



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Re: autolite plug for mod H in reply to jdub, 08-14-2012 13:14:45  
3118 is hotter than the 3116. Not many keep that one on hand though.

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Paul from MI

08-15-2012 20:19:06
204.106.250.243



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Re: autolite plug for mod H in reply to davediehl@hotmail.com, 08-14-2012 16:46:23  
Never found a3118". Does NAPA stock them?

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Mrjdman80

08-14-2012 13:42:11
66.79.211.138



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Re: autolite plug for mod H in reply to jdub, 08-14-2012 13:14:45  
it should be a 3116. Hotter is not the answer though, what's the real issue?

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jdub

08-15-2012 03:16:25
207.72.4.97



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Re: autolite plug for mod H in reply to Mrjdman80, 08-14-2012 13:42:11  
She's always been a little hard to start and took the mag off a while back so had to re-time it. just noticed yesterday it's 'sparking' @ 2.5 inches after it hits the impulse mark on the flywheel. Going to re-time it but just wanted to put a good set of plugs in it... Thanks

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buickanddeere

08-15-2012 05:56:17
184.151.61.50



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Hotter plug doesn't mean a larger spark in reply to jdub, 08-15-2012 03:16:25  
They don"t add extra plutonium to the center electrode of a 388 vs a 386 plug to make it hotter.
Hot or cold refers to the plugs ability to soak heat off the center electrode and transfer that heat energy to the engine"s cooling system.
Run 3116 and solid core wires. Time the impulse to TDC or very slightly after TDC.

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jdub

08-15-2012 06:09:11
198.108.109.202



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Re: Hotter plug doesn't mean a larger spark in reply to buickanddeere, 08-15-2012 05:56:17  

Thanks I'll give it a try...

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buickanddeere

08-15-2012 07:46:52
184.151.63.232



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Re: Hotter plug doesn't mean a larger spark in reply to jdub, 08-15-2012 06:09:11  
Use the 3116, stay Away from the resistor 386 and 388.

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jdub

08-15-2012 08:42:23
198.108.109.202



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Re: Hotter plug doesn't mean a larger spark in reply to buickanddeere, 08-15-2012 07:46:52  
OK thanks... plan on getting them today hopefully.

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