Suzuki 1980 DT3.5 Cooling Troubles no water from pee hole.

[dsilvery]

I have 1980 Suzuki DT3.5. Water is not coming out of the pee hole in a steady solid stream. It seems to be a light spray. I already tried running a wire into the hole but didn't improve, it appears the wire just pushes straight in as if nothing is connected to the hole. I'm not sure of the inners that connect to the pee hole. I looked in a clymer manual but it's totally worthless.<br /><br />I already pulled the water pump and checked the impeller and replaced the gasket. also blew out the hole for intake with compressed air. tested the water pump with drill in bucket and appears to be pumping water without problem. I then proceeded to connect a hose to the tube the water is blown up through and ran compressed air ie 100lbs of pressure and seemed to blow through there, did the same with the pee hole. I tried blowing on the hose and it seems to not be obstructed.<br /><br />When running at idle you can see bubbling from the water. I'm assuming this is just the exhaust from the engine. If I spray air in the pee hole the bubbling gets stronger down below<br /><br />I received the Suzuki Service Manual. According to the manual under coolant diagram it exhaust the water back into the housing, doesn't have a tube that goes to the pee hole. I checked the head temperature and it doesn't apprear to be getting hot, not even warm. the water in the bucket is still cool though.<br /><br />I'm in Vancouver Washington. I don't think this motor has ever been in salt water. Looking at all of the components of the engine, the engine is immaculate for being a 1980. All the decals and paint are still original and intact. Looking at the inside of the housing there's no rust.

 

[Merc805]

Re: Suzuki 1980 DT3.5 Cooling Troubles no water from pee hole.

The small Suzuki's don't have a steady stream, but sort of spit the water out. Is the water very hot or just warm ? Can you touch it ?<br />How long have you had the motor ? Did you notice a change in the flow ?<br />Go to www.brownspoint.com and register. You can download schematics and parts lists in PDF <br />BTW When you disconnected the upper/lower Shiftshaft, did you snap the bolt ? I did.

 

[bwarb]

Re: Suzuki 1980 DT3.5 Cooling Troubles no water from pee hole.

Have you been running this engine in salt water ? <br /><br />I had a similar problem with my '89 DT4, all I got out of the pee hole was steam, and the head got so hot that you couldn't touch it. The problem was that the water passages in the block/head were all partly blocked with salt deposits. I ran the engine for a long time in a fresh water tub until it finally flushed enough of the salt out to let the water flow through properly. The external temperature of the head has now dropped to the point that I can touch it while the engine is running without removing the skin on my fingers ...... and water now trickles out of the pee hole continually on idle and pours out as a solid stream when you rev it up.<br /><br />Brian

 

[jim dozier]

Re: Suzuki 1980 DT3.5 Cooling Troubles no water from pee hole.

Pull the lower unit and like you did before, hook up a hose to the water tube (that exits the water pump), but instead of blowing air up it, run hot water. This will do 2 things: it will eliminate flow of water out of the water pump as a variable in the problem and if Brian W. is right it may flush/dissolve some of the deposits.<br /><br />More often than not, it takes removal of the head and scraping with a mechanical tool (pick or screwdriver) to chip the deposits away from the head and cooling passages. Its not just salt (which is easily soluble in hot water) but aluminum oxides and carbonates (which are not very soluble in water) that cause most of the clogging.

 

[grid]

Re: Suzuki 1980 DT3.5 Cooling Troubles no water from pee hole.

The 3.5 had all the problems the 4 cured. The head and block cooling passages build up salt residue quickly because they really have no speedy discharge. And there's no way I found in all the years I've worked on them to install a pee-tube without disrupting the volume. You'll have to remove the head and gasket, resurface the head after cleaning out the salt, clean out the salt in the block, install a new gasket and torque the head. Truly, torque it: the bolts WILL break easily.