Great video! I learned more about boat engine cooling and exhaust in your 60-second illustration than I had in months of watching other channels. Hope this works for you!
Glad you find the problem and working on the solution. Looking forward to Envision back sailing soon. Small boat small problems, big boat big problems. Fair wind.
Glad you tore the exhaust system down. The mixing elbow/exhaust inspection is a 300 hour sched for Yanmar. Check your shop manual for details (internet search). To reduce carbon buildup in future, start engine and let it warm at idle 5 minutes. Then run the engine around peak torque to motor out. Idle 5 minutes without load to let the engine cool before shutdown. Don't idle longer than that if you can help it. When running near full power, throttle up until you see exhaust smoke then pull the throttle back until the smoke is gone. Why? Diesels don'r have throttle plates like gas engines - they're always 'wide open'. More power comes from injecting more fuel. Eventually you run up against propeller pitch and the engine can't spin any faster. Adding more fuel at that point only makes smoke and clogs the exhaust. Fair winds, SV Jane Ann, Tampa Bay
Well done - I like the organized approach you took to diagnosing and solving the problem. Your work process also seems very organized and the result reflects the thought and care you put into that process. I hope this step fixes your engine problem, but if it doesn't, I'm confident you will figure out what the next step needs to be and you will get that done just as well. It may not be a lot of fun to you, but it is satisfying and enjoyable to watch - thanks!
Had to do the same repair on my O’Day 272LE last year. Had one of the iron couplers go bad and spray water. Because everything was seized together, had to replace everything - elbow, manifold flange, connectors. Also went ahead and replaced the Vetus muffler while I was at it, along with new exhaust hose.
well done on the wrap. its pretty simple, and when you think about it, its just a blanket to keep the hot exhaust pipe from radiating heat into the engine bay. Keeping it tight and having multiple layers is all you need. How it gets done or what it looks like isn't important. on to the next project! :)
I don’t know boats as well. But I do know diesels. Which I’m guessing is what your boat runs on. My suggestion to keep that buildup from accumulating, run the heck out of it every so often. Once a month or two run it full throttle for 10 min+ to heat it up and blow all that carbon out.
Thanks. I think the deposits are where the still water line is... so water sits right there, with carbon in it... and that thing is likely nearly 40 years old... or at least half that.
Glad you found that running problem you should be all set now. My 1983 Oday 28 M15 only has a raw water system, no heat exchanger. Must have been an upgrade on the later model. Yours is a 1985?
Mine is a 85 with a M12 and the engine coolant also runs through the hot water heater, which I didn't include in my diagram. If no heat exchanger, how was your engine cooled?
Just raw water through the engine and out the cylinder head into the exhaust manifold to that Y mixer, muffler and out. No heat exchanger..odd I know but it works.@@AdventuresInParadise
I really appreciate your videos. I also have a 1985 O’Day 28 with a freshwater cooled 10 hp Universal diesel and have benefited immensely from your videos as I have had some of the same problems that you tackled before I did. Where did you get the parts for the new exhaust system? The raw water injection pipe is a shiny metal - what is it made of? THANKS so much! Best, Malcolm
Water injection pipe was from toad marine supply and the flange that goes on the motor was from Catalina Direct. I ordered both online. I think the those two parts were around $75 each.
thanks so much, today discovered whey my depth guage failed....ground wire that runs in the pedestal guard was worn away, hope it will be easy to rewire. @@AdventuresInParadise
Now that you fixed everything on this boat it’s time to buy a bigger boat and start the process over 😜
Great video! I learned more about boat engine cooling and exhaust in your 60-second illustration than I had in months of watching other channels. Hope this works for you!
I've been subscribed for quite some time. This has been your most interesting repair.
Glad you find the problem and working on the solution. Looking forward to Envision back sailing soon. Small boat small problems, big boat big problems. Fair wind.
Man that's going to run so much better.
I know, and it's had to be this way since we bought it, so I'm expecting it to run like it never did before.
Glad you tore the exhaust system down. The mixing elbow/exhaust inspection is a 300 hour sched for Yanmar. Check your shop manual for details (internet search).
To reduce carbon buildup in future, start engine and let it warm at idle 5 minutes. Then run the engine around peak torque to motor out. Idle 5 minutes without load to let the engine cool before shutdown. Don't idle longer than that if you can help it.
When running near full power, throttle up until you see exhaust smoke then pull the throttle back until the smoke is gone. Why? Diesels don'r have throttle plates like gas engines - they're always 'wide open'. More power comes from injecting more fuel. Eventually you run up against propeller pitch and the engine can't spin any faster. Adding more fuel at that point only makes smoke and clogs the exhaust.
Fair winds, SV Jane Ann, Tampa Bay
Nice job, Jason.
I sold my Catalina a few years ago and I'm still watching your videos even though I don't have a boat any more. yep. Keep up the good work:)
Thanks. I miss our 22 sometimes.. less complicated.
Well done - I like the organized approach you took to diagnosing and solving the problem. Your work process also seems very organized and the result reflects the thought and care you put into that process. I hope this step fixes your engine problem, but if it doesn't, I'm confident you will figure out what the next step needs to be and you will get that done just as well. It may not be a lot of fun to you, but it is satisfying and enjoyable to watch - thanks!
Thanks for sharing your experience with us. Great video. Fair winds 🌬
Had to do the same repair on my O’Day 272LE last year. Had one of the iron couplers go bad and spray water. Because everything was seized together, had to replace everything - elbow, manifold flange, connectors. Also went ahead and replaced the Vetus muffler while I was at it, along with new exhaust hose.
I had to do the same thing. Nice work there!!!!
Great video as always !
Thanks for sharing your experiences and lessons learned. Very much appreciated!
well done on the wrap. its pretty simple, and when you think about it, its just a blanket to keep the hot exhaust pipe from radiating heat into the engine bay. Keeping it tight and having multiple layers is all you need. How it gets done or what it looks like isn't important. on to the next project! :)
True, especially in this situation, it's not like it's pipes on a motorcycle where you can see them !
I don’t know boats as well. But I do know diesels. Which I’m guessing is what your boat runs on. My suggestion to keep that buildup from accumulating, run the heck out of it every so often. Once a month or two run it full throttle for 10 min+ to heat it up and blow all that carbon out.
Thanks. I think the deposits are where the still water line is... so water sits right there, with carbon in it... and that thing is likely nearly 40 years old... or at least half that.
I live in Florida near Tampa and would love to meet you guys. I recently bought a 28 ‘ Cape Dory sailboat that I am preparing for next summer.
Sweet.
Nice how I did it video thanks
Im doing this exact repair/replace this weekend!
I wish I could have watched somebody do it first! Good Luck!
@@AdventuresInParadise got a love Harbor freight!
Great job love your vids
Glad you found that running problem you should be all set now. My 1983 Oday 28 M15 only has a raw water system, no heat exchanger. Must have been an upgrade on the later model. Yours is a 1985?
Mine is a 85 with a M12 and the engine coolant also runs through the hot water heater, which I didn't include in my diagram. If no heat exchanger, how was your engine cooled?
Just raw water through the engine and out the cylinder head into the exhaust manifold to that Y mixer, muffler and out. No heat exchanger..odd I know but it works.@@AdventuresInParadise
I really appreciate your videos. I also have a 1985 O’Day 28 with a freshwater cooled 10 hp Universal diesel and have benefited immensely from your videos as I have had some of the same problems that you tackled before I did. Where did you get the parts for the new exhaust system? The raw water injection pipe is a shiny metal - what is it made of? THANKS so much! Best, Malcolm
Water injection pipe was from toad marine supply and the flange that goes on the motor was from Catalina Direct. I ordered both online. I think the those two parts were around $75 each.
thanks so much, today discovered whey my depth guage failed....ground wire that runs in the pedestal guard was worn away, hope it will be easy to rewire. @@AdventuresInParadise