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Re: older mecury wont pump water
Never had a good water pump caviate. You may have a problem with your powerhead causing exhaust to enter the cooling system. This could be any thing from the head gasket beginning to fail, the exhaust cover plate and baffle having gasket or corrosion issues or even the powerhead base gasket or water tube "O" ring being rotted out from around the inlet pipe.
Before you do any of that-- pull the drive off the motor, drop it in a bucket of water and spin it with a big drill. If the key way is in correctly it should spit water vigorously out the outlet.
When you put it back on, put liberal grease in the pump outlet and check the "o" ring burried down that hole. Then find the tube guide and put it on the pump at the outlet. This will make sure the tube actually goes in the pump.
So now you are sure the pump works and the tube is in the pump, with this knowledge-go on the search for the real problem. I would first drop the exhaust plate off the side of the motor. Take the baffle to the wire wheel and clean the scale off it and hold it to the sun look for pin holes. Inspect the gasket areas for burn outs. If the gaskets are in good shape- leave them alone and put some sealer on the clean side. You can do more harm than good by scraping a perfectly good gasket.
Next would be pull the power head. This will give you a look at the water tube where you can check for pieces of old water pump. They get stuck where the water tube from the pump enters the power head base. Also see if the tube has been pushed up into the power head a blocked the water flow. If so just push it back into the pump.
Last is the head gasket. Just put in a new one. Look for burn outs and carbon tracts into the water jacket.
If none of this works- I don't know what to tell ya.
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Maybe the engine cooling pump not work well?
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put it in forward gear. Drop the lower off by releasing the bolts and nuts holding it holding the lower on. (one is hiding under the back pick up screen)- some models had a plug in the back top of the exhaust/intermediate housing hiding an allen head bolt pointing down.
Once released, put a protector in a vise and clamp the lower to the bench.
2 screws or bolts will hold the water pump cover on. (the drive shaft runs thru it) Clean the carbon and rust off the drive shaft will allow the pump housing and impeller off the lower. Retrieve the funny looking key drive which runs the pump.
Inspect the shaft, the lower unit oil for water. and find all the pieces of the water pump impeller which may have gone places they shouldn't have.- including the outlet tube from the power head. Check this by putting a tube on the end and blowing- you should hear and feel the pressure in the exhaust and tell tale hole.
Now take the model number , the old pump parts to the marina for a replacement. Do a side by side comparison at the marina so you get the right stuff. Check the inside drive of the rubber impeller and see if they are exactly the same.
NOW- put the new wear plate / gaskets and drive key on, hold in place with grease. Slide the impeller on the key and spin the drive in both directions to be sure it has the impeller and will securely turn it.
Put grease in the cup of the pump housing to prevent dry start and help seat the impeller blades. Spin the shaft as you lower the housing in the pump so the blades all face in the right direction (clockwise). Screw in the bolts. Grease up the seal the watertube goes in and the spline end of the drive shaft.
Up the hole it all goes, now you only have to spline the shifter (it hasn't moved has it?) The drive shaft and the water tube all at the same time.
Check the shifter for correct position and bolt it down
Hi, if the water doesn't drain from your dishwasher, check the drain line and pump..
clog in the drain line or air gap (if there is one) is the usual reason
that a dishwasher won't drain. Often the problem is at the point where
the drain line attaches to the garbage disposer or household drain
line. If you remove this line, you can clear any debris from the hose
or hose connection. Be sure to reattach the hose before starting the
Your dishwasher pump ejects the water. The
pump is usually mounted directly to the motor, then attached to the
bottom of the dishwasher. You can reach the pump from inside the
dishwasher, but first you need to remove the lower rack, the spray arm,
and the spray arm support. Look for an impeller--a round plastic fan
blade-type of device that spins around. This is the wash impeller,
which forces the water through the spray arm. Beneath the wash impeller
is the drain impeller, which is similar in size and shape to the wash
impeller. The drain impeller pushes the water toward the drain port.
These components make up the pump. If any of the pump components are
defective, you need to replace them.
Hi, did you buy your engine used? Sounds like your gonna have to get the carb or carbs cleaned. Its possible you could have a stopped up fuel filter, or not enough spark but i am guessing its gonna be the carbs. They got some gunk in em i bet. Probably old fuel turned to gunk from setting up. I had the same problem on my 40 horse.
Put engine in fwd gear. Then disconnect the shift linkage. Remove the bolts that hold the gearcase on and slide gearcase off of the tower. Remove the 4 bolts or screws in the waterpump housing and lift the housong off. Replace the impeller and reassemble in reverse order. Make sure that you get the water tube lined back up and you can twist the prop to line the splines back up in the powerhead.