Quote:
Originally Posted by MAH77
How old is the AFR meter sensor? The lead in race gas damages the sensor and it loses accuracy.
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I think you can test the sensor with a volt meter. Would want to do it under load or install another one and compare. As long as they are cycling in a normal manner, I want to trust them. Have dealt with numerous failed ones that began to act erratically.
Cycling in a normal manner may not necessarily mean they are accurate though. MFI is not known for having lean issues unless you have a leaky check valve. Doubt if all would suddenly fail together. Fuel pump, filter and fuel console check valve have to be checked. The problem effected the whole motor, some cylinders more than another. Will put everything back together, confirm timing with a timing light. If that checks OK will still install my backup XDi unit. Of all the problems I thought I might have to deal with, this isn't one of them. Plan to have head temp and knock sensor installed by launch.