First Mate: “Does this boat have a Carbon Monoxide detector?”
Bilge Rat “Yes of course, I bought one especially for this trip”
First Mate “Where is it?”
Bilge Rat “Well it is in the bin under the V- berth, I did not get around to installing it yet”
Don’t let the presence of diesel exhaust fumes, soot and high levels of Carbon Monoxide in the cabin distress you. A cracked exhaust elbow on your diesel generator is easily fixed with common household items.
Have a beer and relax. Then make sure your beer can (tinny) is empty, one could drink the contents but as it is Coors Light I just tipped it over the side.
Next cut off the top and bottom of the can and slit it down the side, making a handy wrap around sleeve.
The top and bottom can be recycled, most of the metal is there anyway.
Then slather some two-part epoxy on the cracked exhaust elbow, wrap it well with several layers of aluminum kitchen foil and wrap the tinny around the whole lot. Apply as many hose clamps as will fit comfortably.
Fire up the generator, the heat of the exhaust will cure the epoxy. Another job well done at little cost, no more leaks and the generator is good for another hundred hours of operation.
Unwrap the Carbon Monoxide detector and make a note to buy a battery for it when next ashore.
Boadicea's Chariot 
Mrs J would like a handy man like you! 🙂
They all say that when they have a cracked exhaust elbow!
Job well done, LW.
Though I would call the hose clamp a jubilee clip. We could start a poll on this. There’s not been one on the Chariot for some time.
TR: Yes, I remember them as such in the UK (a Trade name maybe?)
I would also call these vice grips but they were Mole grips in the UK.
Wiki avers: “A worm-drive hose clamp – the “Jubilee clip” – trade name product of the Robinson company”
LW,
It’s a blessing that it would be too dangerous to make marine motors as user unfriendly/unrepairable as most modern cars are. My last car was constantly throwing up warnings and it was invariably the sensor that had gone wrong, not the function it was supposed to be monitoring. Nevertheless it would sling the car into “limp” mode that you couldn’t cancel without the specialist software. Thank you very much sir, that’ll be hundred quid for fixing a fault you didn’t have. I had a spark plug fail recently, doddle innit? Five minute job. Not a chance! Bleedin’ “limp” mode again, another trip to the garage, another hundred quid! Drives me potty!