Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
650 sx water intake probs ???
156 views
Skip to first unread message
Toby Hall
May 11, 1999, 3:00:00 AM5/11/99
to
Can anyone help???
The ski seems to go alright for about 10 mins, then doesn't seem to rev out
as much, on taking off the cover, reveiling a steaming engine with the hull
full of an oily watery mess, I have no Idea what is wrong?
while running a hose through it, a water leak appears trough the hose
between manifold and the exhaust..
what makes the water suck up from underneath to the engine???
if anyone can enlighten me, it would be appreciated, thankyou
Toby. u.k. :)
Laszlo Almasi
May 11, 1999, 3:00:00 AM5/11/99
to
Toby, water to the engine is supplied via the pressurized pump
while the engine is running and the pump is in water. This water
is forced through a hose into the exhaust manifold for preheating
prior to it's introduction into the cylinder for cooling. Water flows
around the jacketed area in the cylinder and then up to the head
and then out to the exhaust header. Inside the header pipe, near
the outlet side is a hole through which water is injected into the
exhaust to help tune the pipe and to help prevent the hoses from
melting. On the stock setup, there is a drain tube on the bottom
side of the pipe to prevent water from filling the pipe and hence
getting into the engine. Check and replace hoses as required.
The most likely reason you are not getting the rpm range you
should be is due to the steam/exhaust buildup inside the engine
compartment choking the motor. There should be no water leaks
in this system, other than the overboard discharge and the internal
"pee hole" as described.
while the engine is running and the pump is in water. This water
is forced through a hose into the exhaust manifold for preheating
prior to it's introduction into the cylinder for cooling. Water flows
around the jacketed area in the cylinder and then up to the head
and then out to the exhaust header. Inside the header pipe, near
the outlet side is a hole through which water is injected into the
exhaust to help tune the pipe and to help prevent the hoses from
melting. On the stock setup, there is a drain tube on the bottom
side of the pipe to prevent water from filling the pipe and hence
getting into the engine. Check and replace hoses as required.
The most likely reason you are not getting the rpm range you
should be is due to the steam/exhaust buildup inside the engine
compartment choking the motor. There should be no water leaks
in this system, other than the overboard discharge and the internal
"pee hole" as described.
Laszlo Almasi
Lo-Ball Engineering
Toby Hall wrote in message <7h8n44$1ps$1...@news8.svr.pol.co.uk>...
bob madden
May 11, 1999, 3:00:00 AM5/11/99
to
I had the same prob with my 650sx this weekend. Everything you described
accept the prob was that my exhaust pipe had come loose and the coupling was
loose. The water and smoke were emptying into the engine compartment. The
reason water is taken in is to cool the engine. Drain the ski and get a new
hose for the exhaust. BTW: do you have curved hoses or are they straight for
the exhaust? I have recently changed waterboxes and I have to have hoses
curved at a 90degree angle to fit. I was just wonderring because I used
radiator hoses and they want to flex back and that is putting pressure on the
pipe and waterbox.
Matt
accept the prob was that my exhaust pipe had come loose and the coupling was
loose. The water and smoke were emptying into the engine compartment. The
reason water is taken in is to cool the engine. Drain the ski and get a new
hose for the exhaust. BTW: do you have curved hoses or are they straight for
the exhaust? I have recently changed waterboxes and I have to have hoses
curved at a 90degree angle to fit. I was just wonderring because I used
radiator hoses and they want to flex back and that is putting pressure on the
pipe and waterbox.
Matt
jetski junkies
May 11, 1999, 3:00:00 AM5/11/99
to
Toby Hall wrote:
>
> Can anyone help???
>
> The ski seems to go alright for about 10 mins, then doesn't seem to rev out
> as much, on taking off the cover, reveiling a steaming engine with the hull
> full of an oily watery mess, I have no Idea what is wrong?
>
> while running a hose through it, a water leak appears trough the hose
> between manifold and the exhaust..
>
> what makes the water suck up from underneath to the engine???
>
> if anyone can enlighten me, it would be appreciated, thankyou
>
> Toby. u.k. :)
>
> Can anyone help???
>
> The ski seems to go alright for about 10 mins, then doesn't seem to rev out
> as much, on taking off the cover, reveiling a steaming engine with the hull
> full of an oily watery mess, I have no Idea what is wrong?
>
> while running a hose through it, a water leak appears trough the hose
> between manifold and the exhaust..
>
> what makes the water suck up from underneath to the engine???
>
> if anyone can enlighten me, it would be appreciated, thankyou
>
> Toby. u.k. :)
You have a water and exhaust leak from the leak in the hose. Fix it.
Perry
jet...@my-dejanews.com
May 16, 1999, 3:00:00 AM5/16/99
to
In article <37381F25...@mediaone.net>,
bob madden <ned...@mediaone.net> wrote:
> I had the same prob with my 650sx this
weekend. Everything you described
> accept the prob was that my exhaust pipe had
come loose and the coupling was
> loose. The water and smoke were emptying into
the engine compartment. The
> reason water is taken in is to cool the
engine. Drain the ski and get a new
> hose for the exhaust. BTW: do you have curved
hoses or are they straight for
> the exhaust? I have recently changed
waterboxes and I have to have hoses
> curved at a 90degree angle to fit. I was just
wonderring because I used
> radiator hoses and they want to flex back and
that is putting pressure on the
> pipe and waterbox.
> Matt
>
bob madden <ned...@mediaone.net> wrote:
> I had the same prob with my 650sx this
weekend. Everything you described
> accept the prob was that my exhaust pipe had
come loose and the coupling was
> loose. The water and smoke were emptying into
the engine compartment. The
> reason water is taken in is to cool the
engine. Drain the ski and get a new
> hose for the exhaust. BTW: do you have curved
hoses or are they straight for
> the exhaust? I have recently changed
waterboxes and I have to have hoses
> curved at a 90degree angle to fit. I was just
wonderring because I used
> radiator hoses and they want to flex back and
that is putting pressure on the
> pipe and waterbox.
> Matt
>
> Toby Hall wrote:
>
> > Can anyone help???
> >
> > The ski seems to go alright for about 10
mins, then doesn't seem to rev out
> > as much, on taking off the cover, reveiling a
steaming engine with the hull
> > full of an oily watery mess, I have no Idea
what is wrong?
> >
> > while running a hose through it, a water leak
appears trough the hose
> > between manifold and the exhaust..
> >
> > what makes the water suck up from underneath
to the engine???
> >
> > if anyone can enlighten me, it would be
appreciated, thankyou
> >
> > Toby. u.k. :)
>
>
>
> > Can anyone help???
> >
> > The ski seems to go alright for about 10
mins, then doesn't seem to rev out
> > as much, on taking off the cover, reveiling a
steaming engine with the hull
> > full of an oily watery mess, I have no Idea
what is wrong?
> >
> > while running a hose through it, a water leak
appears trough the hose
> > between manifold and the exhaust..
> >
> > what makes the water suck up from underneath
to the engine???
> >
> > if anyone can enlighten me, it would be
appreciated, thankyou
> >
> > Toby. u.k. :)
>
>
--== Sent via Deja.com http://www.deja.com/ ==--
---Share what you know. Learn what you don't.---
jet...@my-dejanews.com
May 16, 1999, 3:00:00 AM5/16/99
to
You need to order O.E. hoses for a 91 or later
650 they have the bendyou need . I just installed
a factory pipe on my 89 650sx the instructions
recommended I replace the hoses. They worked
great.They were kind of pricey though.
JD In
650 they have the bendyou need . I just installed
a factory pipe on my 89 650sx the instructions
recommended I replace the hoses. They worked
great.They were kind of pricey though.
JD In
0 new messages