View Full Version : I have a weird leak??
mitch
07-24-2006, 10:45 AM
Just discovered a leak after this AM's ski run, which BTW was my worst of the year. (Doug, Now I don't like the dam% tractor handle either or the curved handle - gotta blame something or someone:) )
From the looks of it this leak may have been there a while and I just noticed it. Drips every 2 secs when running, and about every 3-4 when not running. Any ideas? Is the raw water pump behind there? Thanks for any help!!!
mitch
07-24-2006, 10:49 AM
This might be better....
LakePirate
07-24-2006, 10:50 AM
Is the leak coming from that hose?
Your raw water pump is on the bottom right of your picture you really can't see much of it.
east tx skier
07-24-2006, 10:51 AM
Is that your tstat housing?
Yeah, the tractor hurt my hands.
Hoosier Bob
07-24-2006, 10:58 AM
No noise from the water pump? Water pumps tend to leak a bit before the bearings go. Should not be too much to fix but that would be where I would start. Some leak at the front and some at the rear of the pump.:(
LakePirate
07-24-2006, 11:00 AM
T-stat should be on the top of that curved hose on the right. Is it coming from where the arrow is in pic 2 or is it running down the back and that is the first place to drip?
I like the Tractor grip, non-tractor grips hurt my hands. Too Small.
From the looks of the picture it's been there a while just like you said. It looks like it's coming from the bearing on the back side of your main water pump. I had one fail on my 96 prostar 190 LT1. It started as a slow leak like you have described. Then, as the bearing on the back side of the pump continued to fail the leak got worse and worse. It leaks more when you are stopped because the bearing is not under any pressure and the water from inside the pump is allowed to just drip out. When under power the shaft is spinning in the bearing and you wont notice as much water leaking out. Can you back up a bit and take another pic. On my LT1 I had to get a whole new pump, it's an easy change. From what I understand there are some pumps that you can just change the bearing. Good luck and keep us all posted.
mitch
07-24-2006, 11:08 AM
No noise from the water pump? Water pumps tend to leak a bit before the bearings go. Should not be too much to fix but that would be where I would start. Some leak at the front and some at the rear of the pump.:(
No noise Bob.
mitch
07-24-2006, 11:09 AM
Is that your tstat housing?
Yeah, the tractor hurt my hands.
This will make me look pretty stupid, but I have no idea where the thermostat is :o
mitch
07-24-2006, 11:12 AM
From the looks of the picture it's been there a while just like you said. It looks like it's coming from the bearing on the back side of your main water pump. I had one fail on my 96 prostar 190 LT1. It started as a slow leak like you have described. Then, as the bearing on the back side of the pump continued to fail the leak got worse and worse. It leaks more when you are stopped because the bearing is not under any pressure and the water from inside the pump is allowed to just drip out. When under power the shaft is spinning in the bearing and you wont notice as much water leaking out. Can you back up a bit and take another pic. On my LT1 I had to get a whole new pump, it's an easy change. From what I understand there are some pumps that you can just change the bearing. Good luck and keep us all posted.
Here's a further back pic. Is the waterpump behind that silver pulley with the 4 bolts
Hoosier Bob
07-24-2006, 11:16 AM
Yes that should be your water pump pulley.
pilot02
07-24-2006, 11:16 AM
That's affirmative Ghostrider.
mitch
07-24-2006, 11:17 AM
Where can I get a water pump, Skidim? What do I ask for? I have a couple of handy buddies who are at the lake on the weekends. Do I have to pull the boat or can I do it while it's in the water. All stupid questions, but my mech skills are ltd to changing the oil, tranny fluid, plugs and impeller, and that's it. Thanks all
Hoosier Bob
07-24-2006, 11:21 AM
My guess is skidim will have. You will probably have some gasket residue to clean off but othere than that it should be nothing more than some bolts, a new gasket and 30 min of your time. Loosen the alt, remove the belt, remove retaining bolts clean gasket residue off block(unless self contained unit) and remount and torque (I torque everything!). Should need no sealer.:D
Yep, thats it. First thing I would do is pull off the pump. Check out the bearing. You will know for sure if it's bad. It will start making some noise when it gets real worn. I had to get an auto water pump for my LT1. The only difference is there is an extra has attachment which I had to plug. But your dealer should have one in stock. Skidim may also have one. You will just have to check around. But it sounds like thats your problem.
Diesel
07-24-2006, 11:25 AM
Yep water pump. It has a weep hole on the bottom to indicate when it is time to change out. It can be done in about and hour and it sounds like you have the skills.
mitch
07-24-2006, 11:34 AM
Thanks! Can I change it with the boat in the water?? Pulling the boat is doable, but a PITA where I'm located. I'm guessing, I'll have to pull it :mad:
You should be able to change it in the water as long as you have a ball valve in the fresh water intake line. You will have a little extra water in the boat but you should be able to do it. It is always easier out of the water but I guess it's up to you.
My general rule of thumb is, if the water is coming in faster then you can get it out. Pull the boat...lol :D
erkoehler
07-24-2006, 04:12 PM
It is not the easiest of repairs to do by yourself, but is doable. If the boat is sitting in the water I would pull it out, but if on a shore station, leave it in :)
Jim@BAWS
07-24-2006, 04:26 PM
That is the CIRC PUMP that moves water from one side of the motor
to the other. The WATER pump has an impeller
Let me knw if we can be of assistance. The seal goes in those
pumps every now and then. I have a MOOMBA in right now with the same problem.
Jim@BAWS
Hoosier Bob
07-24-2006, 05:13 PM
If there is an automotive replacement it will be a water pump. Raw water pump (impeller) feeds the circulation pump (water pump). Go into NAPA asking for a circulation pump and who knows what you will get (arse whooping). Automotive water pumps worked fine a few years ago but there may be a difference now but I doubt it has changed. I have a waterpump that due to the overpricing of marine parts and the additional raw water pump it has been renamed the circulation pump. Does the same thing but won't suck water in at low speeds to idle therefore we have the raw water pump impeller suck the water from the big radiator (lake).:D
bigmac
07-24-2006, 05:22 PM
The circulating pump is above the water level. Why wouldn't he be able to change it out in the water? Yeh, he'll spill some water that's in the hoses, but that would happen either way. I don't see how lake water could get in by pulling the circulating pump....
Diesel
07-24-2006, 05:36 PM
The circulating pump is above the water level. Why wouldn't he be able to change it out in the water? Yeh, he'll spill some water that's in the hoses, but that would happen either way. I don't see how lake water could get in by pulling the circulating pump....
You are right it can be done while in the water.
mitch
07-24-2006, 06:02 PM
Thanks all, great reply's! I will check Napa after this weeks vacation, does not seem urgent. Oh, it's Monday, time for a drink :D
trickskier
07-24-2006, 08:59 PM
Thanks all, great reply's! I will check Napa after this weeks vacation, does not seem urgent. Oh, it's Monday, time for a drink :D
I would definately buy the water pump from DIMSKI or another marine dealer. Some of these engines are reverse rotation and require a marine pump application. Also, I believe the seals they use in marine pumps are different than automotive pumps. Just a suggestion.......
Engine Nut
07-24-2006, 09:17 PM
Get a marine circulating pump. The differences between a marine and automotive pimp are:
Brass impeller vanes vs steel
Stainless steel back plate vs steel
Shaft seal designed for raw water and lake debris vs glycol
The marine pump will also have a plugged hole for a heater return.
I would definately buy the water pump from DIMSKI or another marine dealer. Some of these engines are reverse rotation and require a marine pump application. Also, I believe the seals they use in marine pumps are different than automotive pumps. Just a suggestion.......
mitch
11-02-2006, 02:23 PM
Saw this in the Q and A section of the Inmar site. Did not replace the pump over the summer and may wait.
QUESTION AND ANSWER
QUESTION: There is a small amount of water dripping from the water-circulating pump on the front of my engine. Is this normal?
ANSWER: Yes, it is not unusual for a small amount of water to drip from the weep hole on the underside of the water-circulating pump. The seal in this pump is cooled and lubricated with water so a small amount of water leaking from the pump is possible. Leak rates of a drop of two every 5-10 seconds is not excessive. Leak rates higher than that or a steady stream of water indicated that the seal has been damaged and the pump should be replaced with a new or remanufactured marine circulating pump. If you run your boat in extremely shallow water or run it aground, it is possible to draw sand or other debris into the engine, which could damage the circulating pump as well as the seawater pump.
mitch
05-01-2007, 08:57 AM
Never did replace this part, but I believe this is it! Assume I can just re-use my pully no problem? 100 bucks, not bad!!
http://www.skidim.com/prodinfo.asp?number=WP-2232MN
mitch
05-01-2007, 04:58 PM
Never did replace this part, but I believe this is it! Assume I can just re-use my pully no problem? 100 bucks, not bad!!
http://www.skidim.com/prodinfo.asp?number=WP-2232MN
Skidim said that be the one. Ordered.....
mitch
05-16-2007, 09:43 PM
took 2 hours to replace, and only cut my hands twice!!
milkmania
05-16-2007, 09:55 PM
took 2 hours to replace, and only cut my hands twice!!
those radiators can have some really sharp edges8p
if you've ever done one in an auto.... you'll know how much easier it was to replace the one in the boat:twocents: