Mechanic thinks I am nuts!!!!!

Mechanic thinks I am nuts!!!!!

Post by Greg Bol » Fri, 04 Jul 1997 04:00:00


Okay I need help.  But not psychologicaly I don't think.  I have a
bowrider with a 5.7 Mercruiser with less than 20 hours.  I took the boat
in to get some warranty work on it and when I got it back my speedometer
did not work.  I took the boat back during my busy travelling schedule
to get my depthfinder and my speedometer fixed.  I found the problem
with the speedometer was the "tube" (since it is not actually a cable)
was not connected when I got it back the first time.

They reconnected the speedometer tube and fixed the transducer on the
depthfinder (it is a thru hull depthfinder).  Well, as luck would have
it my speedometer quit working and my transducer still had problems.  It
is a new boat and I am a patient man so I figured I could at least use
the boat a little bit without either and have had no problems.

A couple of weeks ago I was flushing out my outdrive and just letting
the boat run a little as I hate to see it sit.  As the boat was running
on idle in neutral on the trailer I thought I would just take a gander
at the speedometer tube.  The tube was attached to the outdrive in the
back and it was connected to the instrument itself.  I thought I may
have something clogging the hole but my small drill bit found nothing
clogging the hole on the outdrive.

Now, I am by no means a certified mechanic but I can work on engines and
know enough to be dangerous, i.e. I am not a mechanical bonehead.  

Now for the mystery - I went back in the boat and started looking under
the dash at the instrument and happened to squeze the tube (for whatever
reason I still do not understand) the engine died on me.  This was the
first time the engine had ever died so I thought it might be
coincidence.  I started the motor and it fired right up and did not miss
a beat.  I was curious so I squeezed the tube again.  The engine died
again!!!  

When I tried to start the boat the second time it would not start at
all!  (The engine had not sputtered or misfired before quitting either
time.)  I thought well, I will just take it in and get it fixed when I
have time.  I still counted it as just coincidence as I know the speedo
has nothing to do with the engine ( I am not that crazy).

Well, before I took it in I went down and tried to start it again and it
started up just fine (took a little doing but nothing alarming).  I took
the boat out reluctantly and had no problems the next two times out.

Now, I just got back from flushing the boat and letting it run a little
when curiosity got the best of me again.  I squeezed the tube
intentionally and the motor died again.  Started up just fine and I
squeezed again and it died again.  Now I can't start the boat again just
yet but I will bet it will start tommorrow.

I called the mechanic and he thinks I am just another idiot that knows
nothing about boats or engines.  I am not going to take the time to
diagnose this as that is what my warranty covers but I am trying to find
some sort of explanations!!

Could there be some sort of vacuum tube they have the cable hooked up to
on the outdrive and when you deprive it of air it stops?  Is it
coincidence again (I think not) or is my boat posessed?  Should I call
an exorcist?  The common answer should be that I should not squeeze the
tube but it may be a problem which might leave me stranded.

The mechanic says there is not a vacuum tube and I am confusing the
cables and wires.  I say he is the crazy one.  Any ideas?

Try this on yours and see.

thanks,

greg

 
 
 

Mechanic thinks I am nuts!!!!!

Post by L.. » Sat, 05 Jul 1997 04:00:00

Quote:

>Okay I need help.  But not psychologicaly I don't think.  I have a
>bowrider with a 5.7 Mercruiser with less than 20 hours.  I took the boat
>in to get some warranty work on it and when I got it back my speedometer
>did not work.  I took the boat back during my busy travelling schedule
>to get my depthfinder and my speedometer fixed.  I found the problem
>with the speedometer was the "tube" (since it is not actually a cable)
>was not connected when I got it back the first time.

>They reconnected the speedometer tube and fixed the transducer on the
>depthfinder (it is a thru hull depthfinder).  Well, as luck would have
>it my speedometer quit working and my transducer still had problems.  It
>is a new boat and I am a patient man so I figured I could at least use
>the boat a little bit without either and have had no problems.

>A couple of weeks ago I was flushing out my outdrive and just letting
>the boat run a little as I hate to see it sit.  As the boat was running
>on idle in neutral on the trailer I thought I would just take a gander
>at the speedometer tube.  The tube was attached to the outdrive in the
>back and it was connected to the instrument itself.  I thought I may
>have something clogging the hole but my small drill bit found nothing
>clogging the hole on the outdrive.

>Now, I am by no means a certified mechanic but I can work on engines and
>know enough to be dangerous, i.e. I am not a mechanical bonehead.  

>Now for the mystery - I went back in the boat and started looking under
>the dash at the instrument and happened to squeze the tube (for whatever
>reason I still do not understand) the engine died on me.  This was the
>first time the engine had ever died so I thought it might be
>coincidence.  I started the motor and it fired right up and did not miss
>a beat.  I was curious so I squeezed the tube again.  The engine died
>again!!!  

>When I tried to start the boat the second time it would not start at
>all!  (The engine had not sputtered or misfired before quitting either
>time.)  I thought well, I will just take it in and get it fixed when I
>have time.  I still counted it as just coincidence as I know the speedo
>has nothing to do with the engine ( I am not that crazy).

>Well, before I took it in I went down and tried to start it again and it
>started up just fine (took a little doing but nothing alarming).  I took
>the boat out reluctantly and had no problems the next two times out.

>Now, I just got back from flushing the boat and letting it run a little
>when curiosity got the best of me again.  I squeezed the tube
>intentionally and the motor died again.  Started up just fine and I
>squeezed again and it died again.  Now I can't start the boat again just
>yet but I will bet it will start tommorrow.

>I called the mechanic and he thinks I am just another idiot that knows
>nothing about boats or engines.  I am not going to take the time to
>diagnose this as that is what my warranty covers but I am trying to find
>some sort of explanations!!

>Could there be some sort of vacuum tube they have the cable hooked up to
>on the outdrive and when you deprive it of air it stops?  Is it
>coincidence again (I think not) or is my boat posessed?  Should I call
>an exorcist?  The common answer should be that I should not squeeze the
>tube but it may be a problem which might leave me stranded.

>The mechanic says there is not a vacuum tube and I am confusing the
>cables and wires.  I say he is the crazy one.  Any ideas?

>Try this on yours and see.

>thanks,

>greg

 Just a guess, may be a bad contact at the ingnitions switch.  While
you pinch the tube, you disturb the wire.  Does the boat die if the
tube is pinched closer to the intake ?

 
 
 

Mechanic thinks I am nuts!!!!!

Post by Dave Brow » Sun, 06 Jul 1997 04:00:00

Quote:

> The mechanic says there is not a vacuum tube and I am confusing the
> cables and wires.  I say he is the crazy one.  Any ideas?

Aside from the dash lights, the speedo weorks independant of all systems
in the boat (it uses water/air pressure to work). Could you be pulling
on a wire at the same time you're squeezing the tube? Gotta be.....

Regards,

                Dave Brown
                Brown's Marina