On Sep 12, 5:05*am, Jim wrote:
fzbuilder wrote:
On Sep 9, 6:34 pm, Wayne.B wrote:
On Wed, 9 Sep 2009 12:03:58 -0700 (PDT), fzbuilder

wrote:
Hey Guys, I have an 86 Penta 350 in my Bayliner and at start up there
is no smoke, but when it gets warmed up around 170, it starts putting
out white smoke. My oil is clean and the engine runs pretty smooth
however I am getting very little to no water out the exhaust and yes I
have the outdrive with the prop off resting in a tank of water. No
leaking water into the bilge. I just replaced the impeller and am now
thinking of the water pump, but the smoke is making think there is
another problem. Any help would be appreciated. Thanks
There are a lot of possibilities but it sounds like you are getting
cooling water mixed in with the combustion process somewhe

Blown head gasket

Rusted risers or exhaust manifolds

Cracked head or block

Replacing risers and exhaust manifolds is routine maintenance - every
6 to 10 years for freshwater boats, half that for salt water. * It it
hasn't been done, that is probably your problem.

Ok here is were I am at.
Took hose from raw water pump and un-hooked it from the thermostat
housing. Started it up and am getting good water shooting out. Took
out the thermostat. Filled the engine with water and flushed it a few
times with a shop vac. Very rusty water. Put housing back on without
thermostat and still no flow out the outdrive. Pulled one of the
risers and they are super clean. I just replaced them 3 years ago, but
have been working on this boat most of that time. I would say it has
to be the water pump at this point. Yes?

If the pump is working, why do you suspect it is the problem? Look for a
blocked power steering cooler. Also some Volvo models have a sea
strainer mounted on the engine. If yours has one you need to clean it
out. Is it possible that you might have a kinked hose or maybe even have
* some hoses attached wrong?

Ok I put and water pump on and took out the thermostat. It has no
strainer or power steering and I am still getting little to no water
flow. Impeller pulls water good. Risers are clean. I have hooked a
hose directly to the manifold hose intake and water flows out the
outdrive good. The wired thing is, I get it to about 150 degrees and
alot of white smoke comes out the exhaust. Not sure if it is just
boiling the water at this point hence the white smoke. I have no water
in the oil and no smoke at start up.

Maybe there is a clog in the block it's self not letting good water
flow?

fzbuilder wrote:
On Sep 12, 5:05 am, Jim wrote:
fzbuilder wrote:
On Sep 9, 6:34 pm, Wayne.B wrote:
On Wed, 9 Sep 2009 12:03:58 -0700 (PDT), fzbuilder
wrote:
Hey Guys, I have an 86 Penta 350 in my Bayliner and at start up there
is no smoke, but when it gets warmed up around 170, it starts putting
out white smoke. My oil is clean and the engine runs pretty smooth
however I am getting very little to no water out the exhaust and yes I
have the outdrive with the prop off resting in a tank of water. No
leaking water into the bilge. I just replaced the impeller and am now
thinking of the water pump, but the smoke is making think there is
another problem. Any help would be appreciated. Thanks
There are a lot of possibilities but it sounds like you are getting
cooling water mixed in with the combustion process somewhe
Blown head gasket
Rusted risers or exhaust manifolds
Cracked head or block
Replacing risers and exhaust manifolds is routine maintenance - every
6 to 10 years for freshwater boats, half that for salt water. It it
hasn't been done, that is probably your problem.
Ok here is were I am at.
Took hose from raw water pump and un-hooked it from the thermostat
housing. Started it up and am getting good water shooting out. Took
out the thermostat. Filled the engine with water and flushed it a few
times with a shop vac. Very rusty water. Put housing back on without
thermostat and still no flow out the outdrive. Pulled one of the
risers and they are super clean. I just replaced them 3 years ago, but
have been working on this boat most of that time. I would say it has
to be the water pump at this point. Yes?
If the pump is working, why do you suspect it is the problem? Look for a
blocked power steering cooler. Also some Volvo models have a sea
strainer mounted on the engine. If yours has one you need to clean it
out. Is it possible that you might have a kinked hose or maybe even have
some hoses attached wrong?

Ok I put and water pump on and took out the thermostat. It has no
strainer or power steering and I am still getting little to no water
flow. Impeller pulls water good. Risers are clean. I have hooked a
hose directly to the manifold hose intake and water flows out the
outdrive good. The wired thing is, I get it to about 150 degrees and
alot of white smoke comes out the exhaust. Not sure if it is just
boiling the water at this point hence the white smoke. I have no water
in the oil and no smoke at start up.

Maybe there is a clog in the block it's self not letting good water
flow?

I think your hose routing is wrong. If your raw water pump is working
and you don't get ANY water out there is a problem. Typically the
thermostat housing routes water to the risers continuously and to the
manifolds when the thermostat is open. You need to get a manual and
check to see if you have the hoses right. The manual should also have a
flow diagram. Without the manual you are trouble shooting in the dark.
If you changed any gaskets, I hope you compared the new against the old
to make sure you bought the right ones and installed them the same
orientation as the old ones.

On Sep 9, 3:03*pm, fzbuilder wrote:
Hey Guys, I have an 86 Penta 350 in my Bayliner and at start up there
is no smoke, but when it gets warmed up around 170, it starts putting
out white smoke. My oil is clean and the engine runs pretty smooth
however I am getting very little to no water out the exhaust and yes I
have the outdrive with the prop off resting in a tank of water. No
leaking water into the bilge. I just replaced the impeller and am now
thinking of the water pump, but the smoke is making think there is
another problem. Any help would be appreciated. Thanks

My I/O impeller could not pull water from a "tank" ... could be you're
getting very little cooling water and so the output is steam ... I'm
surprised it's not overheating. I'd recommend the garden hose and
muffs thingy ... then see if water's coming out the exhaust once up to
temp and the thermostat opens.