I'm still trying to diagnose my p0301 misfire and learning while I go. I've come up with a couple of posers that maybe someone knows about.
While testing coil resistance, I took the boot off of the coils and there's a little resistor living between the coil mounted boot and the coil.
Carrying this thought process further, if the resistance is supposed to be matched between the boot with a resister and the HT leads/boots, it would stand to reason that the HT leads with boots attached should have the same resistance as each other if the coils are interchangeable. I'm afraid to try and take the boot off of the HT leads to see if they have little resisters (at least in the short one) in there as well. The manual only gives HT tolerance in ohm/meter which is really useful when measuring leads significantly shorter than a meter, but if this thought is correct, then the leads with boots attached, should have the same resistance as each other and a difference would indicate that at least one is out. This leads to the third question...
or
Thanks,
Warren
1st question: If the coils units only have two leads in for the primary coil (battery voltage in and ECU controlled ground to fire), and both HT leads on the unit share the same secondary coil, how does the unit control which HT lead is fired, or does it simply fire both each time and waste a spark in one of the cylinders?
While testing coil resistance, I took the boot off of the coils and there's a little resistor living between the coil mounted boot and the coil.
2nd question: Is the little resister there to match the resistance of the bottom boot to the resistance of the HT lead with boot attached off the top?
Carrying this thought process further, if the resistance is supposed to be matched between the boot with a resister and the HT leads/boots, it would stand to reason that the HT leads with boots attached should have the same resistance as each other if the coils are interchangeable. I'm afraid to try and take the boot off of the HT leads to see if they have little resisters (at least in the short one) in there as well. The manual only gives HT tolerance in ohm/meter which is really useful when measuring leads significantly shorter than a meter, but if this thought is correct, then the leads with boots attached, should have the same resistance as each other and a difference would indicate that at least one is out. This leads to the third question...
3rd question: Should the two different length HT leads with boots attached have the same resistance as each other?
or
4th and 5th question: Is there a proper way to measure the resistance in the HT leads? (boot on or off, if they even come off)
and,
Has any body converted KIA's wonderfully stated tolerance of 16k ohm/m to something of relevance for the long and short leads? (Since it is difficult to tell where to measure the distance to and from).
and,
Has any body converted KIA's wonderfully stated tolerance of 16k ohm/m to something of relevance for the long and short leads? (Since it is difficult to tell where to measure the distance to and from).
Thanks,
Warren