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Subject: Re: Thinking of purchasing Seamaster 27

Mike Thompson
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Date Posted: 10:35:40 18/01/2012 Wed
In reply to: Malcolm 's message, "Re: Thinking of purchasing Seamaster 27" on 18:00:07 16/01/2012 Mon

>Hi Paul
>I have a Ford Pre-crossflow in a Seamaster 27 and I am
>thinking about changing to diesel. Never had problems
>with the parts just purchased a new carb but cannot
>get rid of the flat spot when accelerating. The move
>to Diesel would be for economy purpose only as you can
>barely hear the petrol engine but I believe the
>diesels can be quite noisy.

Hi Malcolm,
You're right. As I said in my earlier post our old Perkins is very noisy. It's difficult to hold a conversation in the cockpit, especially with the canopy up.
Regarding your flat spot - if you've renewed the carb then I guess that rules out a faulty accelerator pump so the next thing I would look at is the vacuum advance unit. The best way is to use a strobe light which will show if both the vacuum and cenrifugal advance is working properly. When you crack open the throttle you should see a momentary retard, then as the revs pick up it should smoothly advance. I hope this is helpful.

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