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Old 22 October 2013, 01:17   #11
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Originally Posted by Festinghouse View Post
i know its very frustrating, normally everyone has an idea - usually involving changing expensive items as if theyre nothing! is your engine fitted with a rev limiter? ive no idea how to test one (stators, regulators triggers etc ive done) but could it be worth going along that line? im not sure how they work, but i reckon any fault on the ignition would result in a lumpy engine. is the boat loaded with same weight - your hull isnt full of water is it?!
All after market black boxes was professionally set up originally
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Old 23 October 2013, 18:14   #12
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If it's down by nearly 1000 rpm and you didn't do anything to the engine, then I'd check all cylinders to make sure they're all firing.
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Old 11 November 2013, 05:19   #13
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Finally


Would you beleive it,,, plug caps
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Old 11 November 2013, 08:44   #14
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Originally Posted by nugent View Post
Finally


Would you beleive it,,, plug caps
and Yes I would..Nice easy fix though Ed,thats the main thing!
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Old 11 November 2013, 08:54   #15
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Finally


Would you beleive it,,, plug caps
I'd have though they were in a plastic bag .......
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Old 11 November 2013, 08:59   #16
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Plug leads

Had a similar problem with our Opti.

Would drop about 500rpm after 30 seconds at WOT.

Really stumped the engineers. Injectors? Air injectors? Fuel filters? Fuel pumps? ECU?

Decided to start looking at the cheapest parts first - and thought back to my first car.

One of the plug leads had chafed on the block and as soon as everything got hot must have been shorting / breaking down>

New set of leads and bingo back as she was :-)
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