New issues on engine

[chevysford]

So I ended up finding a bad fuel pump. She runs good again. I changed the impeller as well. Now when she is running I get the spray out the back. But I noticed a screw hole leaking next to the top sparkplug. Pictures to help troubleshoot below.

 

[racerone]

Replace gasket on the water jacket cover.

 

[Chris1956]

That is an old inline Merc, right. Dry out the area and put a dab of silicone on the leak.

Alternatively, you could replace the water jacket cover gasket, however, you risk breaking some or all of the bolts holding it on.

 

[merc850]

That looks like a hole for a temp or water pressure gage, I'd plumb in a pressure gage.