2 prong spark plugs - Car Troubleshooting


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2 prong spark plugs

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leftuncheckd
New User

Dec 8, 2007, 2:57 PM

Post #1 of 3 (3720 views)

2 prong spark plugs	Sign In

Is it just my imagination ?
The 2 prong looks like it would produce a better hotter spark. But does it really ? Is it really better than the L-shaped one ? And is the 4-prong better than 2.
Logically the 2 prong looks good, but am I being fooled ?

way2old
Veteran / Moderator
way2old profile image

Dec 8, 2007, 5:05 PM

Post #2 of 3 (3713 views)

Re: 2 prong spark plugs	Sign In

Guess that depends on what you want to believe. In my experience the spark plug can only have one spark at a time. Therefore with one ground electrode or 4 electrodes, only one spark can pass at a time. The adds show a spark going to all the ground electrodes at the same time. Possible, but highly unlikely. I have not heard of any sognificant increase in anythif=ng associated with the extra electrode. I would invest in what ever the manufacturer recommends. Gimmicks are usually just that. Good luck.

Being way2old is why I need help from younger minds

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Dec 8, 2007, 5:33 PM

Post #3 of 3 (3712 views)

Re: 2 prong spark plugs	Sign In

Ditto with way2old. Like the show "Mythbusters" ""BUSTED!"" The spark is going to pick the path of least resistance which might not be the same electrode with each firing. In car racing there is a thing called "indexing" the plugs so they get an optimal shot at the compressed mixture of fuel and air. Even that is not well documented to help that I know of.

I fully trust that if something so seemingly simple really worked well it would be OE specified,

T

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