UPDATE:
Since the "new" 173 ECU didn't cure the issue I re-installed the old 153.
Tested spark
- I used an old plug I had around - all 6 wires produced a consistent orange spark. So not nice & blue but spark was consistent and seemed to light up with the frequency expected.
- I did pull one of my new plugs and test with that. Spark was brighter but still in the orange spectrum. Definitely not blue.
- I broke rule #1 and got a no-name coil at the local parts store. It is out of spec per Bentley right out of the box. Tried it anyway. No change.
Tested plug wire resistance
- All are in spec EXCEPT #1. Plug wire #1 tests out at 21200 ohms which is 4x what an in spec wire should be (4x what all the other 5 were at as well).
- Coil wire failed as well with 2070 ohms.
- The Bentley is a little confusing on the test procedure. I'm testing resistance from the plug connector through the wire to the distributor cap connector. Is this the correct procedure?
Since the "new" 173 ECU didn't cure the issue I re-installed the old 153.
Tested spark
- I used an old plug I had around - all 6 wires produced a consistent orange spark. So not nice & blue but spark was consistent and seemed to light up with the frequency expected.
- I did pull one of my new plugs and test with that. Spark was brighter but still in the orange spectrum. Definitely not blue.
- I broke rule #1 and got a no-name coil at the local parts store. It is out of spec per Bentley right out of the box. Tried it anyway. No change.
Tested plug wire resistance
- All are in spec EXCEPT #1. Plug wire #1 tests out at 21200 ohms which is 4x what an in spec wire should be (4x what all the other 5 were at as well).
- Coil wire failed as well with 2070 ohms.
- The Bentley is a little confusing on the test procedure. I'm testing resistance from the plug connector through the wire to the distributor cap connector. Is this the correct procedure?
Comment