@JSHRAM Believe you me, we FEEL your pain. Fifty years ago, people lived with 'unreliable'. My father had a tool box in the car, and I have many childhood memories of being on the side of the road underneath the car, handing my father tools (and if at night, holding the flashlight). And the vehicles were "fuel and spark".
Roll forward, with their greater complexity (beautiful descriptions here
@DEcosse et. al., and elsewhere [for some reason, reminds me of looking at the art and sculpture of the great masters in museums]) and our sensibilities have changed to the point -- few things are more disturbing than a machine the operates intermittently - usually relegates it to garage queen status.
Thank you for coming forward to enable this excellent discussion.
Hope you are soon sorted, and get back to us, please.