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Old 02-22-2012, 08:12 PM   #31
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After some further reading, I have found that the Pur/Yel wire from the starter provides power to the fuel pump at cranking, so wouldnt be causing any problems.

Back to the drawing board!
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Old 02-25-2012, 01:08 PM   #32
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So the boat ran pretty much like a dream today!!

All that I have done is adjust the timing to approx. 10* BTDC, instead of having it set at zero (idiot!).

What I dont understand, is why up until a couple of weeks ago, it had been running ok, and been able to get onto the plane no troubles?


Anyway, problem solved, unfortunately due to my misinterpretation of information, this could have been solved alot earlier.

Only thing is now still a hesitation from idle to WOT, but doesnt do it too bad if only push throttle to 3/4, so will continue to do this, and tinker away until I can get the hesitation out.


Thanks everyone for all the help and comments.

Andrew
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Old 02-25-2012, 02:29 PM   #33
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Glad it's closer to being sorted Andrew. Though it has taken some time you've armed yourself with quite a bit of knowledge in the process.

Good thing, that, because you've beconme rather high maintenance.

Now finish with getting that carb sorted out.

Dan
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Old 02-25-2012, 11:03 PM   #34
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You would nearly have to say I am somewhat of an expert with my boat now!! Bloody thing!

It has been a great learning experience, though obviously a slow and tedious one, since its not like a car where you can change something, then take it for a quick spin around the block to see if the problem is solved.

Anyway, nearly there, will check the plugs before and while IM out next time, and see how they look, and sort out this carb as well.

Thanks for all your help Dan, and everyone else who contributed.

WIll have to get some photos up soon now its running again and before summer finishes in S Hemisphere.

Andrew
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Old 03-25-2012, 08:48 AM   #35
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Hi All

Just a quick update to say that I am pretty close to having this thing purring like a kitten. (FINALLY)

In the past little while, I have pulled the carby again, had to open the secondaries a hair to be able to close the primary throttle plates enough to cover the transfer slots, and so now am able to adjust the A/F mix screws to set the idle.

I bought some timing tape to glue to the Balancer, turns out I had the timing set perfectly at 10 BTDC, so my calculations were spot on!

I have checked spark plugs after cruising, and they seem to read ok, ground terminal a bit white, but ceramic is a tan colour.

I have also replaced the ignition sensor, though I dont think this has made any difference, I didnt check the timing advance before and after, but seemed to run exactly the same before and after, so I am holding the older one for a spare for now.

So, after all this time, finally got it running the way that I want! Must be time to sell it now!

If I were to make any further changes at this stage, I would probably switch props again. Put a 4 blade 19p Solas on recently, max RPM about 4600. Since skiing is the primary use I would probably go down to a 17p, which would probably take me above the max RPM range, but I never use it anyway, and would think would give even better holeshot.


Anyway, I will say it again, thank you to all that have helped on my little adventure, your help with all of my problems has been great, and also a great learning curve for me.

I dont really know what the going rate is for donations for the site, but I intend to donate, since I hopefully wont be spending all my hard earned on the boat now!

photos to come before the end of summer (southern hemisphere)


Cheers

Andrew
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