- What should the Resistance be for spark plug wires on a 2000 Blazer?
- If they're supposed to be 2,000-3,000 Ohms, at what ohms should you look to replace them?
- Is the resistance of all/most spark plug wires the same between vehicles?
- Should I take the $30 Duralast wires back and get the $70 AC Delco wires?
- Should Straight Booted wires differ in resistance from cornered boot wires? Because as the measurements suggest the straight ones are close to 3,000 ohms but the others are closer to 2,000 ohms.
I have been having misfires in my 2000 Blazer V6 4WD. I've done basic maintenance (Changed filters, oil change, etc.) and changed all 6 spark plugs.
I read that you could check your spark plugs using an ohm meter. I've read multiple inconsistent posts on what the Ohms should be some said 4,600 - 7,500, others said 50,000. I personally got around 2,000 to 3,000 for each wire when I measured (Assuming that 2.0 when the meter is set to 20K is 2,000 Ohms).
I just found this stating that the wires should be 1,200-1,500 ohms per foot. So 2,400-3,000 with my 2 foot wires.
New Duralast ($30) Spark plug wires (Measured in 20K Ohms setting):
- Cornered Boots: 2.38, 2.37, 2.50, 2.13
- Straight Boots: 3.01, 2.16
Old Spark plug wires (Measured in 20K Ohms setting):
- Straight: 2.95
- Cornered: 2.55, 2.32
(I only measured 3 because the others are a pain to get to)
Sorry for all the questions but I assume since they're all related it is okay to ask them in a single question. Please say so if I should split them into multiple questions.