1994 Evinrude 225 -idles too fast

[Sand Bass]

Motor idles at 1200-1300 rpms. Carbs are clean. I cannot find any leaks. Idle timing is set at 4 degrees atdc. Throttle plates are closed. On initial start-up and motor is cold it does ok (800 rpms after "quick start" lets idle come down). After I drive the boat for a while and return to neutral it acts like the "quick start" feature is still engaged. I can stop motor and restart and rpms remain at 1200-1300. Motor makes a loud "clunk" when shifting into gear. Any ideas on how to get rpms down? <br />Engine Model Number E225STLERC.<br /><br />Thanks

 

[Sand Bass]

Re: 1994 Evinrude 225 -idles too fast

bump

 

[Dhadley]

Re: 1994 Evinrude 225 -idles too fast

Are the T'stats still in it?<br /><br />Good luck!

 

[Sand Bass]

Re: 1994 Evinrude 225 -idles too fast

Yes, motor has thermostats in. Water pressure is good. Could thermostats be suspect?

 

[BKool68]

Re: 1994 Evinrude 225 -idles too fast

The timing advance might be sticking and causing the high idle.

 

[Sand Bass]

Re: 1994 Evinrude 225 -idles too fast

Dhadley and BK 68,<br />I went back and checked butterflies again. Turns out they were cracked open so slightly that you could not tell by looking. When I loosened the linkage I could tell that they had closed completely. I took boat to the lake and it runs and idles like a charm. Looks like I learned a lesson.<br /><br />Thank You for your help!