More trouble again....Evinrude 15hp

[Ryan0186]

So I finally got my 15HP Evinrude back together today after painting the block. I put the motor in a test tank and it started up after a few pulls. I ran it for about 15mins. While running I noticed that the motor will only idle when the tiller throttle is advanced to the fast position as shown by the indicator on the tiller. If I throttle it back any further than the fast position it will slowly stall (Stalls within 3-4 secs). I had no problem restarting the motor a few times and tried to get it to idle correctly but once it stalled out the third time I could not get it to turn over or even pop like it wanted to start after pulling cord about 25 times. I pulled the plugs and noticed they were sort of wet looking. I check for spark and don't seem to have spark anymore. What do yall think? Power pack? coils? Any idea on how to get this motor to idle correctly? I also installed a new fuel pump that we given to me by the previous owner who bought the parts but didnt have time to put everything together. I seemed to have stripped the little screw that hows the fuel lie retainer to the pump itself. I barely screwed it in and noticed that it had stripped. I guess its just one of those days. Any advice would be greatly apreciated. I keep thinking maybe I should have waited an bought a newer motor. Thanks

 

[Rick.]

Re: More trouble again....Evinrude 15hp

What year/model number have you? Best of luck. Rick.

 

[Ryan0186]

Re: More trouble again....Evinrude 15hp

It is a E15RCTA. 1983 Evinrude tiller 15hp. I will list below what has been done to the engine in the last week so y'all can help me narrow down what it could be.
Rebuilt and cleaned carb
Adjusted slow speed needle in carb 1.5 turns
new fuel pump
new kill switch
spark plugs clean
new water pump with housing

Engine ran good for about 15mins, idle was high, slack in tiller throttle. I can move the tiller throttle about 1.5-2 inches before it will even start to advance the thottle plate below the flywheel. Before I lost spark the engine would only run when the throttle was advanced all the way to the fast postion while in nuetral. If I ease the throttle back to the slow position it will stall within a few seconds. Currently no spark to engine. Wiring is clean and there is no fray or cuts in sheats. Thanks for your help.

 

[Rick.]

Re: More trouble again....Evinrude 15hp

You have to ignore the slack in the tiller gears. You can make it better but I wouldn't bother. Did it once but not again. Have you a way to check your rpm at the slowest setting that it will stay running? New plugs are always better than cleaned plugs but I have cleaned them myself. You should have installed a new man over board (lanyard) kill switch but that is my opinion. The 1.5 turns is a start point for setting the slow speed needle not necessarily the final spot. Are you aware of how to do a link and sync and have you done that? You list looks good. Have a look at this link. Rick.
http://forums.iboats.com/engine-fre...sorted-carb-variations-joe-reeves-167352.html

 

[AlTn]

Re: More trouble again....Evinrude 15hp

cdielectronics.com/troubleshooting will help in the no spark area

 

[Ryan0186]

Re: More trouble again....Evinrude 15hp

Kill/Stop switch is brand new. Swapped it on this morning. I guess I can disconnect it and see if the engine fires up. If not then the next thing to get replaced is the power pack. I might just go ahead and replace the timer base, coils and power pack all at the same time. I am going to go ahead and ignore the slack in the tiller handle. Thanks for the help guys. Ill let you know how everything turns out once I get the new parts on.

 

[the machinist]

Re: More trouble again....Evinrude 15hp

First I would guess that your tiller throttle gears are out of mesh. Look at this article, it may help Maintaining Johnson/Evinrude 9.9 part 1

 

[Ryan0186]

Re: More trouble again....Evinrude 15hp

Ok, So I decided this morning that I was going to go out and tinker with this motor before throwing more money and parts into it. I tested for spark again and found that both plugs are firing. So I knew then that it must be a fuel problem and not spark. I fixed my fuel pump by threading a slightly large screw into the hole that hold the mesh screen on pump. Discovered that the pump was leaking due to one of the compenents being turned 180 degrees out. Took the fuel pump apart and corrected it. The fuel system is now holding pressure. Motor started on first pull. I let it idle for about 25 minutes. I tried to run the motor on the muffs but it would not pump water but as soon as I dropped it in the test tank it would pump. I also reinstalled the prop this morning and for som reason that has helped the idle significantly. The motor seems to be more balanced now and isn't shaking violently when I throttle down. I also check to see that noth cuylinders were firing by pulling off one plug wire at a time, so she is def firing on both cylinders. THe only issue that I am having now is with the throttle linkage. I had to advance the throttle to the fast position and then mark the tiller with a magic marker for the ideal idle range on tiller handle. I read the article that was posted above on the tiller gears being out of sync and to me its doesnt look to be the problem. Thanks so far for the help.

 

[Ryan0186]

Re: More trouble again....Evinrude 15hp

This motor is driving me nuts....It will idle for 20 mins no problem and then as soon as I turn it off and let it sit for a little while it will start but even when throttled up wont stay running. Bogs down a good bit. I am thinking that it has something to do with the slow speed idle screw but I really don't know. Any ideas? Could it be over heating? The water pump is pumping sometimes the water feels cool, other times the water feels almost hot...Maybe I need to run some CLR through this outboard and clean out some corrosion build up.