9.2 HP 60's Outboard not spitting water at high speeds.

[RainMan223]

Im 18 and i bought this boat, motor and trailer last fall. I used it a couple of times and the last time i used it we went around the lakes quite a bit, it was shutting of after a bit and was hard to start. I then noticed that once i revved it up and got going at top speed there was NO water coming from the water "spit" hole. I understand that these motors do not have the **** stream like others but there is no water coming out at all at high speeds. I can put it in neutral and rev it up and water comes out like crazy. Keep in mind this only happens at high speeds. So i figured it was the water pump, i dropped the lower unit and replaced the impeller, it was almost like brand new, but i replaced it anyways. I took it out for the first time today and it is still having this problem.. I am wondering if i should almost tach on some ears or something on each side of the intakes to pull in more water? When i took it apart i checked and everything seems to be clear of debris, i could blow in both holes no problem so im really at a loss of what it could be now? Thanks everyone and have a great day! Any help is much appreciated.

 

[Nordin]

The circumstances reving up in neutral is different to reving up in gear. When you rev up in neutral the impeller housing is filled up with water all the time because the housing is under the water level.
In gear at plane the housing is above the water level.

I have not worked on the 9,2 Hp, but early Chrysler from mid sixties had a impeller housing without seal at top of the housing to the drivshaft.
Instead it had a stainless steel plate under and above the impeller and with this construction it is important that the plates has clean and smooth surfaces.

Also the surface of the impeller facing to the steel plates are important.

Check the steel plates and check the wall in the impeller housing. It should be clean and smooth, some pitting is okey but not to much.

 

[RainMan223]

The circumstances reving up in neutral is different to reving up in gear. When you rev up in neutral the impeller housing is filled up with water all the time because the housing is under the water level.
In gear at plane the housing is above the water level.

I have not worked on the 9,2 Hp, but early Chrysler from mid sixties had a impeller housing without seal at top of the housing to the drivshaft.
Instead it had a stainless steel plate under and above the impeller and with this construction it is important that the plates has clean and smooth surfaces.

Also the surface of the impeller facing to the steel plates are important.

Check the steel plates and check the wall in the impeller housing. It should be clean and smooth, some pitting is okey but not to much.

Both the steel plates were very shiny and smooth, also the housing did have some pitting but nothing i would consider major

 

[tommarvin]

If an impeller works at low rpm, doe's that mean it has to work at high rpm?
If it wasn't cooling at high rpm, it would have burned up in 30 seconds?
You don't need to add ears man.

 

[jerryjerry05]

Does the lower unit stick below the transom?

​It sounds like you were overheating and it was shutting down.

Drop the lower unit and the water tube going to the head: Check it for obstructions.
A thin,thin,thin wire coat hanger. Straighten it.
Push it slowly up the tube and see if there is any resistance.
The old impeller was it in 1 piece or missing blades?
You can't post pics until you have 5 posts.
So post a couple more time and then post pics of the transom with motor and the bottom of the lower.
Pics of the pump and parts.