any idea what exactly is the ECM on this original engine?
Maybe some codes on the ECM will tell.
I have replaced that many years ago, as the original broke itself, had to order a new one from MC UK.
The boat with original ECM had starting problems with warm engine since new, I experienced that a couple of times, but not anymore after replacing the ECM.
PS190 1995 5.7 l EFI TBI 1:1 13x13 4-blade prop. Barefoot boom, wakeboard boom & fatsack. UK made trailer