60Hp Evinrude leans out and dies

srdjo

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Joined
Jan 18, 2004
Messages
2
We just finished a full rebuild on my 89 60hp evinrude. New rings, bearings seals, head machined etc..the carbs were also taken apart and cleaned just before the rebuild. The motor starts fine, but after 2-3 minutes even running at idle, it starts to sound hollow and eventually dies. All the specs on the rebuild are tested, full compression, no leaks, and all torques to OEM requirements. This motor was a Vro that I disconnected about a year ago and have had no problems while mixing my own fuel. After the rebuild I even made the mix richer to compensate for the new rings getting seated. As well, when the motor starts to act up, my warning horn starts blaring in short consecutive beeps..Any ideas ???
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: 60Hp Evinrude leans out and dies

I assume you simply quit using the VRO as a fuel/oil mixing device.... premixing you fuel/oil mixture as per the pre VRO engines, but you did not disconnect the VRO electrical warning components. Explanation of how to do so follows.<br /><br />The short, every other second beeps, indicates that the VRO has either failed, ran out of oil, encountered a oil restriction... something of that nature.<br /><br />At any rate, it sounds like the VRO pump is failing and the engine is running out of oil. You don't say what you need to do in order to get the engine running again.... but it would be my guess that you have to pump the fuel primer bulb up again, then go into the regular starting procedure.<br /><br />If pumping the fuel primer bulb when the engine's running results in having the engine continue to run (acting as a manual fuel pump), obviously the VRO is either failing, a fuel restriction exists between the VRO and the fuel supply, or there's a air leak somewhere in the fuel line.<br /><br />(VRO Changeover Judgement Call) <br />(J. Reeves)<br /> <br /> The VROs first came out in 1984 and have been upgraded quite a few times. In my opinion, back around 1988, they had perfected them but I think that they were upgraded even more since then. As long as the warning system is operating as it should, I feel quite at ease with them.<br /><br />Some boaters have voiced their thoughts such as "What if that overpriced plastic horn should fail while I'm under way for some reason, and the VRO decides to fail five minutes later?" Obviously that would result in a big problem which really brings their fears into view.<br /><br />The word "ease" is the key word though. If one has the slightest feeling of being ill at ease with that setup, then they should take the route they feel more at ease with. A judgement call each individual would need to make on their own.<br /><br />********************<br />(VRO Pump Conversion To Straight Fuel Pump)<br />(J. Reeves)<br /><br />You can convert the VRO pump into a straight fuel pump, eliminating the oil tank and VRO pump warning system, but retain the overheat warning setup by doing the following:<br /><br />1 - Cut and plug the oil line at the engine so that the oil side of the VRO pump will not draw air into its system. Trace the wires from the back of the VRO to its rubber plug (electrical plug) and disconnect it.<br /><br />2 - Trace the two wires from the oil tank to the engine, disconnect those two wires, then remove them and the oil tank.<br /><br />3 - Mix the 50/1 oil in the proper amount with whatever quanity fuel you have. Disconnect the fuel line at the engine. Pump the fuel primer bulb until fuel exits that hose with the tint of whatever oil you used. Reconnect the fuel hose.<br /><br />That's it. If you want to test the heat warning system to ease your mind, have the key in the on position, then ground out the tan heat sensor wire that you'll find protruding from the cylinder head. The warning horn should sound off.
 

srdjo

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Joined
Jan 18, 2004
Messages
2
Re: 60Hp Evinrude leans out and dies

Thanks a lot Joe, i'll check to see if it stops from stalling while I prime the bulb tommorow. I disconnected the wires to the VRo, back when I plugged the oil line, but they may have accidentally been put on after the rebuild. One more quick question... do you know what the proper compression should be? I was reading 90 psi, right when I cranked he motor over, and it slowly increased as I cranked further. This was consistent throughout all three cylinders. Thanks again for your help.
 
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