I have a 2013 Ford C-Max Energi (US-California) with about 150kmi, mostly highway commute miles, great shape overall.
We get an injector 3 code maybe once every six weeks. We put in a bottle of STP Injector Cleaner and it goes away (until next time).
I was a professional mechanic back in the day and am comfortable doing the needful for a more durable repair, but could use some guidance on likely best approach since my experience goes back a couple decades ago.
My plan is below, I'd appreciate any critique and I guess my main question is how to get the new calibration code into the onboard computer (ECM?) after replacing the injector, assuming that turns out to be necessary.
I'm thinking a two-phase approach is called for:
Obtain the proper seals needed for a single injector R&R.
Remove injector 3 (still working out which one that is, I understand they're not numbered by the cylinder they serve).
Clean injector with my hand-pump Bosch injector cleaner using injector pulser to open the valve and mineral spirits in the injector cleaner. This injector cleaner was originally designed for Bosch CIS injectors (MBZ, VW, etc.) but I think will do the job.
Inspect spray pattern and valve sealing/leakage to inform possible replacement.
Replace injector using new seals. Do this even if injector fails inspection so I can get my wife back on the road while I wait a week or so for a new injector.
It that works, that's the end of a happy story. If not, proceed to:
Obtain replacement injector and seals.
Repeat R&R using new injector.
Figure out how to get the (different/new) calibration code for the new injector into the Ford ECM or wherever it goes.