Articles
   
       
Pics/Video
       
Wake 101
   
       
       
Shop
Search
 
 
 
 
 
Home   Articles   Pics/Video   Gear   Wake 101   Events   Community   Forums   Classifieds   Contests   Shop   Search
WakeWorld Home
Email Password
Go Back   WakeWorld > >> Boats, Accessories & Tow Vehicles Archive > Archive through August 01, 2004

Share 
Reply
 
Thread Tools Display Modes
Old     (thebobbytrain)      Join Date: Jun 2004       07-14-2004, 11:26 AM Reply   
Ok, so I have the new impeller installed correctly this time. Water shoots out the back normally and the temperature stays cool....in the driveway connected to a water hose. I took it to the lake last night to try it out and the temperature rose very rapidly and I had to turn it off within 3 minutes of starting it. I opened the engine cover and looked at what could still be wrong, and I noticed that there was almost no water in the strainer, and when I turned the motor on, almost no water was being sucked through the lines. When I checked the lines, there were no clogs or anything. At this point im thinking that the main water pump has gone bad, and if that isn't the case then hell I don't know what to do. I would post this on skidim.com but that board gets about 2 hits a day. Again, any and all help is appreciated and thanks in advance.
Old    zboomer            07-14-2004, 1:07 PM Reply   
A leak someplace in the cooling lines, probably, allowing air in. If air gets in, it won't suck up water properly. That's what was happening to my '92 Prostar, anyway.
Old     (sangeria)      Join Date: Dec 2003       07-14-2004, 1:28 PM Reply   
Did you check the main intake grate and see if that is clogged with something?
Old     (fox)      Join Date: Jul 2002       07-14-2004, 1:41 PM Reply   
Have you tried asking at www.planetnautique.com?

They have a great technical section adn lots of helpful people. I would bet on some kind of blockage. Did you connect to the hose after the lake episode to see if it ran fine again at home?
Old    wissota            07-14-2004, 1:42 PM Reply   
I had a collapsed hose that was restricting the flow. Check all the hoses to see if they are "soft".
Old    nooner            07-14-2004, 2:07 PM Reply   
could be your thormostat sticking.
Old     (ladyboarder)      Join Date: Feb 2001       07-14-2004, 4:12 PM Reply   
A few things to try.
Thermostat, no good way to tell if its good or not, just have to replace it.
Raw water primer pump, I had a problem with my boat where it would run hot at low speeds and cool down at higher RPMs. The water primer pump had gone out. How to test it - pull the outlet hose off and stick it in a 5 gallon bucket, it should fill the bucket in 15 seconds, if it doesn't, you need a new pump.
Transmission cooler strainer, you may have already checked this, but its another thing to check. The trans cooler is a cylindrical fitting on the hose, pull the hose off the top and check the strainer. Not sure if your nautique has this or not, but its something to check for.
Later
Tiffany
Old    g3revenge            07-15-2004, 8:55 AM Reply   
strainer might be loose or your o-ring may be m.i.a.
Old    tommyadrian5            07-15-2004, 10:33 AM Reply   
check the o-ring, check the connections (for air leak) clean the tranny cooler screen, then start thinking about replacing the thermostat, then the circulation pump
Old     (mikeski)      Join Date: Aug 2003       07-15-2004, 10:38 AM Reply   
As I posted before, check that strainer, they are the source of many evils... They cause more problems then they solve. Mine is in a cabinet in the garage just in case I want to put it back when I sell the boat.
Old     (fox)      Join Date: Jul 2002       07-15-2004, 11:18 AM Reply   
For the record, you can test a thermostat by sticking it in a glass of hot water (like to the temp of the stat) Just boil some water in a teakettle. They are cheap, but you can get bad ones from the store new. I keep a nutdriver in my boat that fits all those little hose clamps. Run around and tighten them all up.


If you're using a flushpro in the driveway, it may not be closing fully and sucking air when you're at the lake.
Eric
Old     (fogey)      Join Date: Mar 2002       07-15-2004, 11:59 AM Reply   
By the "main water pump," I assume you mean the water circulation pump that looks like an automotive water pump. It has nothing to do with the strainer, and it is not the problem (or at least not the only problem) if the strainer is not filling up. Also, a faulty thermostat would not cause a problem at the strainer.

When you are operating it on the driveway, the whole system up to the raw water pump is pressurized from the hose. You don't have this pressure on the lake, and this fact can help identify the type of problem you are facing. So, I would:

1. Check for a collapsing hose between the intake scupper and the raw water pump (RWP).

2. Check for the placement of the O-ring in the strainer assembly, and check the assembly itself for cracks. Before doing a lot of work checking out the strainer, however, you may want to just bypass it and see if that fixes the heating problem.

3. Tighten (but not over-tighten) all connections between the scupper and the RWP. Make sure all thread connections are tight and not cross-threaded. If you have a shower or heater, be sure to check these hoses and connections for leaks, too.

4. Check for any blockages between the intake scupper and the RWP. The transmission cooler is a prime suspect, and you clean it by back-flushing it using garden hose (and picking out crud by hand, if necessary). Also, if the hoses are old, a piece of the inside wall could be collapsing. Squeeze the hoses along their length, feeling for sponginess.

Hope this helps.

(Message edited by fogey on July 15, 2004)
Old    fun9c1            07-15-2004, 7:37 PM Reply   
To expand on what Jeff just said about the hose pressure vs. lake no pressure deal- I'd like to share with you a way to run your boat in the driveway that is much safer than a "fake-a-lake", and more accurately resembles the operating conditions at the lake:

Disconnect your inlet hose somewhere upstream of your impeller and run a seperate hose from that point to a 5 gal (or more) bucket full of water (I set the bucket on the fender), keeping the hose a safe distance (1" or so)from the bottom of the bucket (I cut "V"s in the bottom of mine for added security). Now run your garden hose into the bucket. I drilled 2 small holes at the top of the bucket for each hose, to zip tie them to the bucket. Now turn on the garden hose, and when the bucket is full, start 'er up.
Now the boat is sucking up unpressurized water from the bucket just like it does at the lake. I have found that running over an idle, the hose cannot keep up with the motor, and the level in the bucket will go down pretty quick. That alone is enough to keep me from using a fake-a-lake. At an idle, the level will come back up in the bucket, giving me back a 5 gallon "reserve".

This is how New England CC recommended I run my boat in the driveway and it has worked very well, and takes < 5 minutes to set up. That's how they run theirs in the shop, except they use a 55 gallon drum. ;)

(Message edited by fun-9c1 on July 15, 2004)
Old    ag4ever            07-16-2004, 6:36 PM Reply   
That is exactly how I run mine in the driveway.

The only thing I change is, if I want to run up to temp, and have higher that idle speeds, I place the bucket under the exhaust, so I am "recycling" the water, and the hose is just topping off the bucket and tempering the water temp. This way the engine won't ever deplenish the bucket, and I get the thermostat opened sooner so I can then suck in the RV/Marine antifreeze for the boat's short winter nap.

I do like the idea of the v-notch and hole to zip tie the hoses to the bucket.

Reply
Share 

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



All times are GMT -7. The time now is 3:26 AM.

Home   Articles   Pics/Video   Gear   Wake 101   Events   Community   Forums   Classifieds   Contests   Shop   Search
Wake World Home

 

© 2019 eWake, Inc.    
Advertise    |    Contact    |    Terms of Use    |    Privacy Policy    |    Report Abuse    |    Conduct    |    About Us