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Ok still need to get a leak down tester but that motor is using a small amount of coolant. I think steam cleaning of the plug due to a head gasket or intake gasket leak might be the culperet. I will report back when I get some more testing done
I have changed that injector with new orings…. But those are individual to each cylinder so if it was leaking air then could be the cause. What’s the best way to test that…. Would be a new intake if that is the case I am assuming…
Ok I am trying to get photos of the plug, but here is the update.
Changed the injector wires and ran the boat for a mile at 3200 and idled another 10 minutes minimum and no change in plug at all. So to date I have done the following basically eliminating a fuel deliver issue as far as I can...
The wiring diagram I found looks like 1,4,6,7 are wired together with dark green and others are dark blue.
Just checking to make sure 2,4 are the two I need to swap. If not I don’t know that 6 has enough slack to get to 4
https://www.scribd.com/document/95804729/Mercruiser-Electric
