Hottest Sparkplug for John Deere LA

Anonymous-0 · Nov 9, 2012

What is the hottest sparkplug available for A John Deere LA Tractor?

nlastovi · Nov 9, 2012

(quoted from post at 14:18:23 11/09/12) What is the hottest sparkplug available for A John Deere LA Tractor?

It seems as though many people find the Autolite 437 as the best plug for that size. I can not say that it is "hottest" in that size/reach, but it is hotter than a 216. And another alternative would be a NGK B4L I believe. It isn't possible to compare heat-range to heat-range between brands however. So I don't know if it is hotter or not than the 437.

buickanddeere · Nov 9, 2012

Doesn't really matter what heat range used when the engine is out of tune.
Get the coolant temp up to 195F. I'll bet there is no stat, no rad shutters and the tractor just putts around instead of being worked.
Lean out the idle and main jet setting to almost stumbling, not set rich for smoothest running.
Make certain the choke plate is wide open and the air cleaner isn't plugged. Run 50 weight Shell Rotella T1 low ash engine oil.
That engine will run fine on 216's and won't even need 437's.
Toss the resistor core wires away and use solid core.

Hottest Sparkplug for John Deere LA

Anonymous-0

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nlastovi

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buickanddeere

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