Home › Forum › Ask A Member › 77 Johnson 35 problems › Re: 77 Johnson 35 problems
OK, well it is normal for water to run out of that large hole.
How do you know the knocking noise is coming from the gearcase? I’m assuming you changed the gearlube when you did the waterpump job, was the lube relatively clean/no water? If so, it wouldn’t seem as though the gearcase is to blame, but anything is possible. Did you run the engine prior to the water pump job, did it knock then also? The only other thing I can think of is perhaps you loaded the top of the driveshaft with grease/moly lube forcing the driveshaft down with improper gear mesh and resulting noise.
These engines did have a lot of mechanical noise, perhaps this is what you are hearing. Perhaps you can post a video with the engine running/making noise/knocking.