2004 DF140 on 2002 19’ Larson in fresh water. Not sure about hours. This engine has been in the family since new but left my care for many years. It came back to me and I have spent the summer getting it running better. Found cleaning corrosion in the VST, cleaning the injectors, draining fuel tank and new spark plugs brought this engine back to life. It hasn’t run this strongly and at max RPM for several years.
One odd problem…. Terrible corrosion taking place all around the engine but below the water line is really bad. Zincs never changed. Holes completely through the outer wall of the gear case where water runs out like a sprinkler when engine is tilted up.
I have posted about that and got opinions about anodes, shore power leaks and more.
This all changed yesterday…. The engine began running terribly. Had to paddle in. Pulled the spark plugs and 3/4 had beaded-up water on them. Cranked the engine and LOTS of water shot out of at least 3 holes. Checked oil to find way overfilled and baby poop.
I’m a mechanic and inclined to investigate before abandoning this project. I have no $ in this except spark plugs and filters and may very likely get this boat for little to nothing if I want it. We like the boat!
I have searched here for a few hours and found one thing I need to ask about.
Can I check/replace the head gasket with the engine on the boat and without removing the power head from the lower unit?
If anyone can comment further about this bad corrosion problem and where else I might check for water entering the crankcase, I would appreciate it.
Thanks in advance, C.
One odd problem…. Terrible corrosion taking place all around the engine but below the water line is really bad. Zincs never changed. Holes completely through the outer wall of the gear case where water runs out like a sprinkler when engine is tilted up.
I have posted about that and got opinions about anodes, shore power leaks and more.
This all changed yesterday…. The engine began running terribly. Had to paddle in. Pulled the spark plugs and 3/4 had beaded-up water on them. Cranked the engine and LOTS of water shot out of at least 3 holes. Checked oil to find way overfilled and baby poop.
I’m a mechanic and inclined to investigate before abandoning this project. I have no $ in this except spark plugs and filters and may very likely get this boat for little to nothing if I want it. We like the boat!
I have searched here for a few hours and found one thing I need to ask about.
Can I check/replace the head gasket with the engine on the boat and without removing the power head from the lower unit?
If anyone can comment further about this bad corrosion problem and where else I might check for water entering the crankcase, I would appreciate it.
Thanks in advance, C.
