2000 Evinrude 50HP Question

[ajohnson035]

I have a 2000 evinrude 50hp 4 stroke electronic fuel injected. I make a bad mistake today. I took my boat out and did not realize that I left the motor flushing ears on the intake of the motor. I started the motor and it was pumping water so when I went to accelerate I only had a 1/4 throttle and it starting revving up real high so I immediately brought it back down to idle. I tried this about 5-6 times with immediately going back to idle every time. I would say total run time was about 15 mins including the idling time. This was the first time I have taken this used boat out so I made a bad mistake. The check engine light activated but in the owners manual it clearly says if the motor overheated the hot light would activate and the hot light did not come on and it is working according to light test on start up. So I go back to dock and realize what I had done took the flush ears off and put the boat back in. The boat runs really well however the check engine light comes back on. So I immediately go back to dock load up and go home and hook it up to the ears and hose and run it no check engine light came on until 10 mins of idling time. So i disconnect the battery thinking it would reset the light. I run it again later on and 10mins of idling the check engine light comes back on. Again I hope I haven't done any damage to this engine. The hot light never came on so I dont know how I could have overheated it. There is 4 lights no oil, check engine, hot, low oil. Please I could really use some advice here I didn't run it long at all because I never got 100yds from the dock like I say I only tried to throttle up to take off 5 or 6 times I guess what was happening is it was cavitation trying to get through the small garden hose hole on the flush ears. Any advice would be greatly appreciated thank you for your time and efforts.

 

[tashasdaddy]

Re: 2000 Evinrude 50HP Question

new impeller, running with the muffs on did not allow water in to intake, so impeller ran dry, which ruins them.

 

[ajohnson035]

Re: 2000 Evinrude 50HP Question

Do you think that I did any engine damage?

 

[fire7882]

Re: 2000 Evinrude 50HP Question

Do you think that I did any engine damage?

Its unlikely but I would do a compression test just to ease my mind. As tashasdaddy stated, the impeller and housing will probably need to be replaced.

 

[Silvertip]

Re: 2000 Evinrude 50HP Question

That isn't going to clear the Check Engine Light. You might want to check battery voltage as low battery voltage is just one condition that sets the Check Engine light. If the overheat light and buzzer did not sound the engine was not overheated. If the engine cavitated because of the flusher being attached, then the Over Rev indicator would light but that is reset by simply pulling the throttle back to idle for a minimum of four or five seconds. If battery voltage is low however, the Check Engine light will not reset. Just so you know, the Engine Control section in the service manual for this engine is 48 pages long. If battery voltage is not the issue, you need the service manual for further diagnostic work. You would also need a multi-tester (volt/ohm/milliamp meter) and know how to use it.