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Exhaust gas temp I had it wrong. Side benefit of old age!It actually shows 200c but either way it is incorrect. So I shall start the investigation. Thank you all for your help.

In my Selene I have a Cummins 6BTA. 5.9 lt She is equiped with exhaust gas temp sensor. It seems to read 2000degrees which I think is way too high. Actually the gauge shows 200 but is marked X 10. Has anyone an idea of correct temp under say 70% load please? I’m not sure where the sensor is in...

G’day Simi 60, have spotted your mighty ship at, i think, Bona bay. Also seen you come into Airlie a few times from home.I enjoy that region for the same reasons you do. In the shoulder months when we get a bit of west in the breeze we potter around anchorages that are not often used by those...

Bruce, what can I say! Aaah Queensland. Just had a week out in the islands and plan a month between here and Yeppoon. A lovely unpopulated cruising ground. The cruising fleet here in the Whitsundays is as big as I have ever seen. Including large to super sized yachts and power boats. Google “...

Yes the Whitsundays area is a marvellous cruising ground. Mostly being national parks. Cyclones in the lats 10/15 years have resulted in insurance premiums triple. Bastards.

Thank you. Very simple. I imagine zinc anodes would need changing to aluminium?

I see in your photo the actual version of a plan i had been thinking of. Great, how do you regulate the choose the flow from the tap? I have another question. Is there a tool to unscrew the top of the strainer. I have been dropping the bowl to clean it but live in fear of a leak every time i do so.

I understand that it is to be opened when following the rather scary advice on cleaning intercooler. By feeding a small amount of water into the air intake. Flushing it in effect.

Thank you all. As i understand it the horsepower put out is directly linked to fuel usage. FF, I think that if i am achieving less than a knot under hull speed using 50hp i am already very efficient? Ignoring the waste of a lovely 300hp motor!

Thanks, i think you are suggesting a coarser pitched prop. I did look into that and you are right this prop is not really optimum. But at a cost of A$5500 for a new one and given the existing economy i think it would take a hell of a long time to save that money. The boat is very heavy, about...

Thank you all. I think that i am happy with 2.6 gph at 2200 giving me 6.6 knots on a boat with theoretical hull speed of about 7.5knots. Just happy to out there! Fuel at my marina is A1.50 a litre. So averaging close to 1 1/2 litres a nautical mile is pretty good, i think.

Yanmar recommend replacing elbow at 500 hours for my yanmar 6lpa-stp. Mine is 10 years and only 850 hours and is right adjacent to the turbo. So i did. About AU $2000 cost! Yikes! But discovered damage to exhaust hose where it left the support of the elbow. Not visible from the outside, so a bit...

Thank you

My two tanks are the same size port and starboard. The boat has a list to port because of fit out. I have valves on return lines and on cross over pipe. I close of both cross over and fuel return to stbd tank effectively using one tank. When needed i can add from the other full tank by opening...

THEY ( you know the ones) had all assured me that tacho was driven by pulses from alternator! Now am one of the know alls, at least with this tacho. A wee dab of dielectric grease and good to go����

Thank you Bacchus. Drew sensor and gave a wipe pretty clean though. Unlike blade connections. Bit of a clean up of connector blades and we are back in business��

The tacho on my yanmar 6lpa has stopped. Strangely, however, the hour meter part is working as is the alternator. Any thoughts please?

I have contacted Yanmar and will advise when i get a response. Not being cursed with freezing temperatures here may contribute to longevity.

A year ago when i bought my boat i had a big service done. Included i had the impeller replaced. Having done about 275 hours my thoughts turned to replacement. Imagine my surprise when i find that they recommend check and replace after 1000hrs! I think it is a great motor. Shame about the...

Sounds good i tend to cruise at a stately 23/2400 revs. I do give her a bit of a burst approaching anchorage. So i am now relaxed. Thank you

My 6lpa stp yanmar revs to 3800. Has anyone an idea as to what revs would be the minimum to have the turbo happily spinning. I read that it is not good for them not to be used. Carbon build up etc. fuel being expensive down under we tend not to thunder round at 80% available power.

Very hot fresh water and brush will dissolve the salt i have found.

On page 30 of the owners manual it states that 250 hours is recommended time. Sorry should have included ghat in my reply.

Thank you all. I mostly cruise around the lovely Whitsunday islands on the Great Barrier Reef and except for a couple of longer cruises each year do mostly 2/5 hours a day at about 60/70% of available revs. So cruising at about 2500 of the 3800 rpm available. About 7 knots i calculate hull...

We keep our bost in tropical north Queensland Australia. About 20degrees sth. The marina is shallow and does not flush very well. Thus we are are in a soup that makes very hard to keep a clean bottom. I have read of a newish product Micron ap, which they claim is designed for difficult areas...