Being old, single, retired, and a car nut I have time to try to help others.
I have always had an interest in things mechanical.
When the computer age came along it changed automobiles in many ways.
The DME/ECU and the OBDI and OBDII systems came along and I was lost.
What do you mean I can't adjust the timing
Multiport fuel injection
Check engine light???? P-Codes????WTF?????
So I have had to try and learn what I could about those things.
It's car stuff right
Part of learning is trying to help others and getting their feedback on results.
Another part of learning is having people like you question or comment on my advice to others. Makes me go back and think about my approach.
Yes diagnosing via the net is hard.
I don't have the car before me.
I can't see it, touch it, feel it, smell it, hear it, taste it, talk to it, and it can't talk to me. So ya it's hard
Take care.