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Old 05 January 2005, 04:04   #11
ADS
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Quote:
Originally Posted by Rogue Wave
It could well be a potential detonation problem and if so it needs sorting!

I don't think a spray of WD40 is gonna cure it but you mighta been born lucky!
I was told that if you spray WD40 onto the suspected leak area when the engine is running if the engine is sucking in air it will suck in the wd40 and therefore miss fire or splutter a bit. Apparently, you can do it with alcohol and the revs should pick up. I have tried this and it didn't make any difference.
I am planning to get it serviced soon anyway so I will get them to check it out.

Alex
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Old 05 January 2005, 07:39   #12
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Sorry Alex

I wasn't talking to you my comments were made to Tony about his Optimax fault which is something that I know a bit about , but not as much as turbodiesel!

In general I try not to offer advice unless I have personal experience of the fault and or problem being discused, I have had a few Optimax's fail on me hence my further questions to see if I can offer any advice based on my experience.

He also has other messages coming out of the indicator guages which perversely can indicate the that the main 12v feed to the engine may be compromised.

I don't know very much about engines and I am not a good man with a spanner so I can't really help you with your question. If you ask one of the Forum Old farts like Pete7 or David Manning about your Suzuki as they will very probably know the right answer! But It seems plausible to me!

My apologies to anybody I have missed out in my list of Old Farts

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Old 05 January 2005, 15:54   #13
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If the Engine is saying overspeed at 4000Rpm thats the first stage of the gaurdian cutting in.
I had a similar problem on a 115 opti a few weeks ago i fitted the boat out for a customer took it out for a trial and had a similar fault, overspeed at 4000rpm and it kept saying reduce throttle speed.
To cut a long story short... After plugging in the DDT (Diagnosic Tool) i noticed all the overspeed faults had happened when the engine was in neutral???? But i was moving a 30knts??.
It turned out to be the ingear protect switch had a wire loose so the engine thought it was in neutral and was trying to stop me from over reving. So it could be somthing as simple as a loose wire. You need to get the dealer to Plug his DDT into it to find out whats going on. Opti's are pretty good and well protected by there guardian system. Let us now how you get on
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Old 05 January 2005, 16:56   #14
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Latest!

HI

Thanks for the replies everyone. I took it into the Mariner dealers today and waited around for a bit. At 1st they couldn't find any faults, apart from the fact that it sounded dog rough and didn't want to idle! The computer that they plugged in wasn't showing any current faults, just some in the history about the overheat and fuel problem. When I left them they were checking the plugs one by one. They all looked a bit coked up, black and wet.

I rang at about 4 this afternoon to see what the latest was and they have now got it running, quote "as sweet as a nut". They found the oil line wasn't connected properly!!?? I can only think that when I took the oil tank out from under the console to fill it up I disconnected something! Don't say it.

They are now checking the fuel tank sensor as this is not showing anything in the tank. They have said they want to get it out on the water to test it is OK at higher revs than they can manage on the mufs, but hopefully it is OK.

So basically, it was me.

I'll let you know the outcome of the sea trails, probably middle of next week as the boss of teh Mariner Dealers is going to the boat show.

Thanks again.

Tony.
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Old 11 January 2005, 05:01   #15
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dats good were u luanch from
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Old 23 January 2005, 14:35   #16
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Quote:
Originally Posted by craigdavis
dats good were u luanch from
Either Cardigan or Aberporth depending on the tide/weather.

Tony.
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Old 23 January 2005, 14:43   #17
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Quick Question,

Are you supposed to have water seperarators/filters in line with the fuel supply on an optimax? I have heard people say that they are not supposed to be there as they increase the resistance in the fuel line, and then ive seen quite a few optimax boats fittied with them on their transoms....

is it dangerous to have one in line?
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Old 23 January 2005, 15:08   #18
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opti

It is recommemded that a seperator is fitted to fuel line even though one is fitted on engine.
Any water getting through is going to wreck the injectors.
Paul
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Old 24 January 2005, 06:01   #19
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Quote:
Originally Posted by Paul F
It is recommemded that a seperator is fitted to fuel line even though one is fitted on engine.
Any water getting through is going to wreck the injectors.
Paul

Sorry Paul but if you look in the manual for an OPTIMAX it clearly says you shouldn't fit one.

That said I`ve got one on a boat I bought recently and no problems. But I'd read your manual take on board the advice from Merc then decide before I did ANYTHING.


Chris
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Old 24 January 2005, 07:34   #20
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Quote:
Originally Posted by CJL
Sorry Paul but if you look in the manual for an OPTIMAX it clearly says you shouldn't fit one.

That said I`ve got one on a boat I bought recently and no problems. But I'd read your manual take on board the advice from Merc then decide before I did ANYTHING.


Chris
Sorry if this sounds really nieve but can someone explain why fitting an additional fuel/water seperator filter in addition to the standard small one supplied in the engine would be a bad thing ?, Yamaha recommend they are fitted as an additional thing, therfore i have one on my transom filtering the petrol, one would assume that the cleaner the petrol the better the burn will be, and as Pauls pointed out water can damage the engine parts ?
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