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Author Topic: Spark plug question  (Read 989 times)

Offline Ken4004

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Spark plug question
« on: April 08, 2026, 04:47:00 PM »
Hi Everyone just a quick question about spark plugs on the 400 4 , in the Haines manual it calls for DR8ESL plugs I have DR8ES plugs does anyone know the difference ?
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Offline Bryanj

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Re: Spark plug question
« Reply #1 on: April 08, 2026, 05:01:39 PM »
Half a heat grade, they will be fine unless you are a nutter!
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Offline Ken4004

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Re: Spark plug question
« Reply #2 on: April 08, 2026, 07:05:09 PM »
Ok thanks for the info
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Offline exvalvesetdabbler

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Re: Spark plug question
« Reply #3 on: April 08, 2026, 08:41:09 PM »
I thought it should be D8EA or denso x24es

Dave
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Offline exvalvesetdabbler

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Re: Spark plug question
« Reply #4 on: April 08, 2026, 09:35:53 PM »
Also if you're running resistor plug caps you don't really want a resistor plug as well.
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