Tested the plug wires, just to rule them out, got some readings and I'm not sure if they are within the limits?

Tested in firing order:

1 Long wire : 8480
6 Short wire : 3520
5 Short wire : 5710
4 short wire : 5170
3 Short wire : 5760
2 Short wire : 5180
Coil wire : 3520

 

How did you test the resistance and why are you testing the resistance?

 

I'm doing a tune up do to a small missfire. I almost sure that the missfire is related to my fuel leak in the plenum, but I'm checking it all and replacing what needs to be replaced before the winter arrives.

I used a digital multimeter, black probe on one end and red probe on the other, put my multimeter to ohm and wrote down the readings.

 

You'll need to find out what type of wire it is and how long each one is.

http://www.aa1car.com/library/spark_plug_wires.htm

Scroll down to the "Types of spark plug wires" section.

 

AcDelco Premium Silicone 7mm, length varies from wire to wire......

 

Found this: "The OE Packard Silicone and AC Delco Premium Silicone 7mm replacement ignition wires are 100K mile wires. The wire resistance should be 600 ohms per foot"

That can't be right? This should mean that the short wires should be around 800 ohms and the long one around 1400ohms.

Does it matter what length goes where as long as the firing order is correct?

 

Save yourself the trouble and just buy new wires. I went through this exact same thing a few months ago and found it more practical to just change them. From the numbers you provided I would guess that your wires are ok. As long as they are all reading approx the same (longer ones obv higher resistance) they should be ok. Problem is they break down on a microscopic level over time. Pretty sure the only way to truly test them is with an oscilloscope.

 

I can't find if they're carbon core or mag wire. All you really need to do is get a measurement from a similar but known working wire and divide by its length to get the ohms/ft and see if all the wires match that same ohms/ft (within certain tolerance of course). Ex: 5 wires come out to 3000ohms/ft but the last one is 7000ohms/ft, that one is obviously not right.

 

Yes, I probably will. But they are only one year old, so they shuld be ok.

I turned of the lights yesterday and tested them with som light water mist, and I thought I saw some sparks, but that was only for a fraction of a second and I couldn't pin point where it came from.