I have spent hours & hours getting to know things in the RYA Day Skipper etc, nobody told me that I had to be a Marine Engineer to own a boat!
To cut a very long story short :-
(3rd Trip out Dec 03) I was showing off my new boat (new to me) to the instructors at the RYA training centre, I had just passed over the helm when the boat slowed from a steady 38Kts to 28Kts, I thought that Terry had slowed on purpose.
The engine then just stopped.. dead! I got the normal “you have run out of fuel” & “who didn’t check the 2-stroke oil?”. After the initial piss taking, everything was checked and found to be in order.
The engine would turn-over, not a hint at trying to start!
At least I got a free lesion in towing & recovering a stranded boat!
The initial feeling was that the filters were blocked, fuel contamination. Towed the boat back home and then round to my local Yamaha dealer.
(March 04) Dealer confirms no problem with the filters….. metal around the base of the spark plugs on the top 3 cylinders!
Yamaha inspect the engine block…. and wrote it off! Over heating issues on the top cylinders…. No warning, no alarms… nothing.. just stopped
After a lot of phone calls and visits…… I get a phone call from the yard suggesting that while the gearbox is off, they should replace the impeller as this is the ONLY component that was not replaced under warranty, I also got them to replace the gearbox seals.
Got the boat back (Oct 04), haven’t been around much to use the boat, until now!
I am a little concerned that all I can do is trust the dealer(s) have completed the work properly. I have now way of checking that the Over-heat is working or installed! It didn’t work last time and yet it was supplied by one of the biggest Yamaha dealers on the south coast!
Anyway, thanks for the advice about the oil, I will be calling Yamaha to ask there advice. Just out of curiosity, why does the 3.3Ltr take more looking after than the 2.6?