Do number of electrodes on spark plug matter?
#1
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I replaced the plugs about 2 months ago on my 2004 530i... I went to O Reilly's and they looked up on their computer which plugs were recommended for my sled. I ended up getting the NGK Iridiums and what I took out were NGK as well with about 50K on them... The plugs that I took out had 4 electrodes on each plug and the new ones I put in were only singe electrode. This has kind of been bugging me a little but the car runs just fine.. Are there any problems with replacing the 4 electrode spark plugs with the single electrode plugs?
#2
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My Ride: 2008 535i: June 6th start build, complete June 17th, at NY Port July 5th, at dealer July 10th, took delivery Friday July 13- Plantimum Bronze/Natural Brown Leather/Light Poplar, Sport Package, Sport Auto, Active Steering, Premium Package, CWP & PDC. Dinan Performance Software 384hp & 421 ft/lbs.
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If the plugs match the specs for the car then you should not have problems. As the service intervals increased between plug changes the technology needed to change to make the plugs stay in gap spec for the same period. With one electrode, each spark goes to the same ground electrode and after time the metal wears away and the gap gets bigger. With four electrodes when the spacing to one electrode gets bigger, the path of least resistance is to the closest electrode, so it jumps to another of the four- and so on.
The plug theoretically can last four times longer than a single electrode plug. Utilizing different metals like platinum, iridium, etc can extend service intervals as well.
The plug theoretically can last four times longer than a single electrode plug. Utilizing different metals like platinum, iridium, etc can extend service intervals as well.
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