On Wed, 20 Jul 2005 01:24:22 GMT, Electraglide
wrote:

I have a 2002 chaparral signature 240 that I just purchased, the boat
was bought new in Denver. When I try to start the engine I have to
turn it over for several seconds to get the engine started, when I say
several seconds I mean like 15 to 20. I can hold the key and let the
engine turn over about three or four times and let go and it will
crank but I have to use this procedure a dozen time before she'll
fire. After it starts it runs fine it's just a pain to get running.
I live at sea level so I was wondering if maybe the ECM wasn't
adjusting to the change in pressure. I don't have a scanner yet but I
am looking. I just thought maybe someone in the group may have had
this problem and can steer me in the right direction. Oh yes I called
Mercury Marine and one of the tech's told me that the MAPT sensor had
plenty of range to adjust to the change in altitude. I checked the
plugs and they were all very "wet" so I feel like the hard start
problem that I have is the ECM not adjusting to it's new surroundings
and still hasn't leaned out the mixture. The engine has 167 hrs. on
it, runs like a top if I can get it started, it's a mcm 350 magnum mpi
300 hp with bravo lll outdrive. Also while it's running if I hit a
large wake the engine "cuts out" momentarily could this be related to
the hard start problem? Any thoughts or help greatly appreciated.
electraglide
gulf coast


Hmmm...I guess you would see wet plugs if the choked startup is
prolonged. So the problem could be either ignition or fuel mix.

Have you checked spark strength? Then ignition timing?

Brian Whatcott