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