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Old 17th November 2009, 17:54   #1
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Default Identifying spark plugs

hey people.
i have three spark plugs lying around which my dad brought from UK around 25 years ago. but i dont know what type of plugs they exactly are.
They have no box or manuals.
Here are the pictures.
Please help me identify them.
Attached Thumbnails
Identifying spark plugs-p1010362.jpg  

Identifying spark plugs-p1010371.jpg  

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Old 17th November 2009, 18:00   #2
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I hope this helps:

Identifying spark plugs-typen_590_large.jpg
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Old 17th November 2009, 18:12   #3
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sir all the spark plugs in the above figure have a single electrode while in the ones i have there are 6 of them.
These spark plugs have been used in my earlier maruti for about a week but according to dad the FE dropped considerably so we reverted back to the normal ones.
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Old 17th November 2009, 18:25   #4
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Yes but I was going by the codes printed on the spark plug (pic 1)
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Old 17th November 2009, 18:48   #5
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Could you post a pic of the full reading on the spark plug.L70f..?
i could help you if i get the pics
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Old 17th November 2009, 19:22   #6
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my bad.
waise the code written is L7OF3. Help decode this.
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Old 18th November 2009, 00:58   #7
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It looks like a champions spark plug. And you did mention the fe dropped which might be connected to the f3 part because it is a colder spark plug. I think it is 6 for maruthi baleno. The fuel efficency drop is due to the design of the spark without any shield.This was an outdated design. This information might not be accurate.
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