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  #1  
Old 03-14-2002, 11:13 PM
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Spark plug wire resistance

I've been reading old post about spark plug wire resistors and resistance with solid core copper wires.
My coil wire resistance is 1 ohm
My plug wire resistance is 6 ohms plus some.
Are these values acceptable for a 1972 w117 engine's. ignition system?

Thanks in advance for all replys,


Knarf
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  #2  
Old 03-15-2002, 03:54 AM
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Rule of thumb is maximum of 1000 ohms per foot.
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Old 03-15-2002, 09:02 AM
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Quote:
Originally posted by Jim T
Rule of thumb is maximum of 1000 ohms per foot.
Not with solid core wires.
Which is what Benz uses.
Should read trace on all wires. They get the resistance from
the resistors on the plug end. [ That way, they are all the same , regardless of length]
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  #4  
Old 03-15-2002, 09:21 AM
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As Arthur pointed out the resistance is at the plug connector & at the dist cap itself. YES 6K ohms is correct fot that engine.
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  #5  
Old 03-15-2002, 07:42 PM
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Thanks for the responses.
Now on to the next level of troubleshooting rich idling/hard hot starts.
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1985 280sl
87 190E 2.6 - Donated
90 300E-Junked
97 E420
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