BoatBanter.com - View Single Post - Cannot See the Telltail Water Stream from the Motor

Don White

wrote:
I left the boat in the driveway for one year without starting the
motor. Today, I put the lower unit into a bucket of water, and start
the motor to winterize it. After trying to start it for a couple
times, I finally manage to start it. Unfortunately, I cannot see the
telltail water stream coming out from the motor cooling system. All I
see is some smoke coming from the hole where the water stream is
supposed to come out from. Despite the fact that the motor temperature
was not overheating (only run it for 30 seconds or so), I decided to
turn off the motor just to be in the safe side.

My question is:

Should I expect to see the telltail water stream coming out from the
motor as soon as I start the motor? Does the motor need to reach a
certain temperature before the water stream coming out? The boatowner
manual said this:

"2. If engine is cold, run engine for 1 or 2 minutes ...
3. After engine has warmed up, check water temperature
gauge to ensure that engine temperature is not
abnormally high... Check that water is running from
the tell-tail on the back of the engine..."

This seems to suggest that the telltail water stream may not come out
if the engine is not warm enough. Considering the fact that the
overheating warning horn doesn't sound, the cooling system may not
really have a problem.

However, the Mercury Operation & Maintenance Manual for my 1995 Mercury
115hp outboard said this differently:

"10 Turn ignition key to START ...re-prime until engine
is running smoothly.
11 Check for a steady stream of water flowing out
of the water pump indicator hole.
IMPORTANT: If no water is coming out of the water
pump indicator hole, stop engine..."

This surely seems like I should expect to see telltail water stream
coming out as soon as I start the engine.

Now, I am really confused with this conflicting info. Obviously, I
don't want to risk overheating the motor. Can someone help me with
this?

Thanks in advance for any info.

Jay Chan

I'll ask a simple question. Is the bucket big and deep enough so that
the outboard's cooling water intake is below the surface?