Evinrude too Slow

I purchased a new NITRO with an EVINRUDE 115 PRO SERIES equipped with VRO in 1993 and all went well for the first 7-8 years.  Problem number one was a small crack developed in a metal component on the fuel supply.  A new $23.00 part and 99 cent gasket put us back on the water in fine shape for the last couple of years.  This year we experienced good idle and rpm to 2500 and after that, forget it.  It wouldn’t come up out of the hole.  Drop to idle and keep playing with the throttle and perhaps you could get to 45mph and almost maintain plane.  I figured it was time for a carb cleaning.  The boat is used 4-5 times a year and probably doesn’t have 100 hours maximum on it.  Perhaps the gas is going stale and gumming up the carbs high speed jets etc.. 

Surprise! It seems the mice had eaten some wiring for the timer base and shorting out much of the wiring and therefore stalling occurred because of a lack of spark etc..  We are replacing the timer base and having the carbs cleaned.  The shop recommended a new VRO pump.  They say because of the age of the boat that it is a good idea.   I had my doubts about that theory for the VRO pump and wondered if you agreed with that line of thinking. Any other wisdom imparted will greatly be appreciated. 




A new update VRO would be a wise investment. The quality is better and they work great. It is fairly cheap, so I would do it. 




Please submit whatever questions you have to IHRTechTalk@yahoo.com.  All questions and answers selected will be displayed on this page as they come in.  Note: though all boaters are welcome, priority may be given to I.H.R. members.  Randy can not be held responsible for any advice given.  Though his information and expertise is second to none, he has no control over what you do with your boat.  It is up to you to boat safely and act responsibly, and his advice is only to be used as a guidance for your high performance boat/motor of which you are the one responsible for the risks involved.

Mark C.


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