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Spark plug wires testing?

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Old 01-15-2012, 02:12 PM
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Default Spark plug wires testing?

Hey guys, I recently purchased this ej1 with the stock d16z6.
I don't know what maintenance has been done on this car, so I decided to check. I was testing the spark plug wires with a multimeter and these are the numbers I got for the resistance.

Cylinder 4 - 6
Cylinder 3 - 8
Cylinder 2 - 9.5
Cylinder 1 - 11

How are these numbers?
Should I replace them?
Old 01-15-2012, 02:25 PM
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Default Re: Spark plug wires testing?

Just replace them with new. Do a full tuneup since you know nothing about the vehicle history.
Old 01-15-2012, 03:07 PM
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Default Re: Spark plug wires testing?



-Connect ohmmeter probes and measure resistance.
-If resistance exceeds 25 K Ohm , replace the ignition wire.
Old 01-15-2012, 05:29 PM
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Default Re: Spark plug wires testing?

Originally Posted by uhhRay
Hey guys, I recently purchased this ej1 with the stock d16z6.
I don't know what maintenance has been done on this car, so I decided to check. I was testing the spark plug wires with a multimeter and these are the numbers I got for the resistance.

Cylinder 4 - 6
Cylinder 3 - 8
Cylinder 2 - 9.5
Cylinder 1 - 11

How are these numbers?
Should I replace them?
What units for the measurements - Ohms or KOhms? Regardless, they test fine.

It's also important to inspect the wires for cracks in the insulation.
Old 01-16-2012, 07:58 AM
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Default Re: Spark plug wires testing?

Originally Posted by RonJ@HT
What units for the measurements - Ohms or KOhms? Regardless, they test fine.

It's also important to inspect the wires for cracks in the insulation.
What is the proper setting, my meter has 2k 20k and higher, I assume higher?
Old 01-16-2012, 08:02 AM
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Default Re: Spark plug wires testing?

Originally Posted by motegicivic
What is the proper setting, my meter has 2k 20k and higher, I assume higher?
Start at the 2K Ohm range. Depending on the reading, switch the range to be closest to the initial reading, if necessary.
Old 01-16-2012, 09:29 AM
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Default Re: Spark plug wires testing?

Probably best to replace them. There is always the possibility of a break in the insulation even if resistance values are good. If you know nothing of the car's maintanence history, where its been or what type of owner the previous person was then replacement can be peace of mind.
Old 01-16-2012, 09:59 PM
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Default Re: Spark plug wires testing?

Thanks guys!
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