Misfire, no compression on cyl 4
Folks,
I think my N14 engine on the R56 MINI just bought the farm.
Massive misfire started out of the blue on I-78, car limped home on three remaining cylinders. No forewarning of any kind. Just check engine light on the way home, then loss of power, then intermittent stalling.
Read the codes - there is a TON, but all point to massive misfire all around, and particularly on cylinder 4.
Pulled the plugs - the one in cyl 4 was missing its electrode altogether! Reset all codes.
Put new plugs in, still misfire on cyl 4, car runs on three cylinders. Reset all codes.
Swapped coils around hoping that one is bad - still misfire on cyl 4, car runs on three cylinders.
Ran compression test on cyl 4 - gauge read ZERO compression. I tried on other cylinders to make sure gauge is not broken - sadly, gauge and other cylinders are OK, cyl 4 is not. Could be stuck/bent/etc valve, could be something more dramatic.
Can anyone suggest ANY scenario from the above description that does not end up with me rebuilding the existing or buying a new N14 engine?
TIA,
alex