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First recorded activity by BoatBanter: Jul 2006
Posts: 3,117
Default Following Sea Motion Causes Engine to Nearly Die


frank1492 wrote:
With each "push" of a choppy following sea, the Chevy V6 in my 22'
Grady White I/O seems to want to die. This also happens when the
boat gets into any kind of a repetitive wave pattern. It is as if
something cuts off the fuel supply as the boat surges forward, and
restores it as it goes up the crest of the next wave. (Something in
the fuel tank perhaps?)
If it isn't something in the tank, where else would I look? What-
ever, it is definitely a function of up-and-down hull motion.
Your help is much appreciated! Thank you!
Frank


Everybody else is favoring a fuel supply diagnosis, and they may well
be right.

However, there are other possibilities that should be investigated, and
they would include the additional "load" of the following sea on your
prop as well as the liklihood that the following sea could be running
up your exhuast pipe and reducing your engine's abilty to breathe.

Do you know whether changing the trim of your outdrive has any effect
on the phenomenon?

 
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