Looked at a 98 Sun Tracker with a 40 HP Merc today... little concerned
about the stream the engine was shooting. Owner couldn't find his
'earmuffs'.... so we put the foot in a garbage can to crank. (didn't
run it long enough to heat the water too much) Noticed then that
there wasn't much of a stream coming out of the engine... just sort of
a drizzle. Took it to the lake, still not too much. But the boat had
a water pressure guage that was showing 10 psi or so... does that sound
about right?

wrote:
On 13 Aug 2006 16:56:00 -0700, wrote:

Looked at a 98 Sun Tracker with a 40 HP Merc today... little concerned
about the stream the engine was shooting. Owner couldn't find his
'earmuffs'.... so we put the foot in a garbage can to crank. (didn't
run it long enough to heat the water too much) Noticed then that
there wasn't much of a stream coming out of the engine... just sort of
a drizzle. Took it to the lake, still not too much. But the boat had
a water pressure guage that was showing 10 psi or so... does that sound
about right?

Is it a 40 4 stroke big foot? There is a known problem with a leak
where the water tube mates with the powerhead but lets hope that isn't
it. (warranty fixed my 60)
My water pressure is 17 -18 WOT, 14psi at around 4000 and ramps down
to about 4-5 at dead idle. When coming down quick from WOT it will
drop to 3 or so until the thermostat closes and gets it back up.
Seeing this I usually try to bring it down slower to keep the water
flowing if I can.


Pretty sure it's a 'regular' foot. Sounds about like the same
pressures I was seeing... just weird it wasn't shooting a stream out.