Left engine overheating in 98 Sportster 1800 - PLEASE Help

[Muddinking]

Ok, I have A LOT of problems out of this boat lately. It's just one thing after another. I am now fighting an overheating issue.

I checked the water lines and blew threw them. They seem to be totally clear. The engine seems to be getting oil as well. I put it in the water and it has very little thrust. The right engine does all the work.

The left engine soon overheats and the alarm does the flat line beep. The manifold and waterlines are all hot.

I checked the impeller tonight and when you turn it over it looks pretty loose in there. Is there a way to tighten it? Could that be the whole issue?

 

[Dr Honda]

Your jet pump is what supples the water to the engine. If the splines in the PTO have stripped... that would be causing the problems listed. (no thrust, and over heating)

You may want to pull the pump, and check everything.

 

[Muddinking]

Your jet pump is what supples the water to the engine. If the splines in the PTO have stripped... that would be causing the problems listed. (no thrust, and over heating)

You may want to pull the pump, and check everything.

What does PTO stand for? If the splines have stripped what exactly would I have to buy to fix it? I will pull the jet pump this week. Also is there a seal I will need to replace?

 

[Dr Honda]

Power Take Off. (PTO) It's the flywheel on the back of the engine, that the drive shaft is stuck into. It is common to strip the splines from it if the engine is out of align, the drive shaft is bent, or if it is not kept greased.

If you pull the pump, and the drive shaft... you will be able to tell.

 

[Dr Honda]

Sorry... you had a 2 part question.


Normally, you will need just a PTO, but if the splines on the drive shaft look damaged, or bent... you will want to replace that too.

As far as a seal... you could replace the Carbon ring (drive shaft seal) while you are in there if you want. But if you don't have any cavitation issues... then it's not needed.