Electrical problems? 115 Yamaha
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Posted on Tuesday Apr 17, 2012 at 12:39 PM  
have a 1994 C115TLRS. Plain Jane basic motor. No oil injection, with carbs. I have had problems for the last couple of years getting the motor started. I have replaced the fuel pump, and rebuilt the carbs. Took it it a mechanic last fall, he adjusted the carbs and said it run like a top. It does when it runs. Sometimes it will die when I an sitting at the dock and have problems restarting it. The main time i have problems if it I make a run to my fishing spot, and fish for a while. When I try to restart it it will to try and fire then die. Crank, Crank, nothing. Let it set for a while and try again. Eventually it will start. When it will not start I do not see any fire at the plugs, as soon as I see fire it will try to start. Is their any way to figure out if the trigger or the power pack is the problem? It sure acts like an intermittent problem with the electrical system. Power packs are not cheap............
When it is running at WOT it sounds great, runs great, but I have had it die at a fast idle. Any ideas?

Thanks
You Can Tune a Piano, but You Can't Tuna Fish (REO Speedwagon)
Posted on Tuesday Apr 17, 2012 at 1:07 PM  
I can't remember if Yammy potted in their powerpaks or not - but normally if they fail the coil fails open, and it won't be an intermittent problem

Intermittent electrical problems are a headache - I think what I would first try and do is get some good dielectric grease, take apart EACH wiring harness canon plug and look for any corrosion the regrease and put back together

Then look at your NEUTRAL switch position on your shifter yoke - these cause a lot of intermittent firing problems -n fact next time you have a firing problem work the shifter several times and see if boat starts

Since you indicated it runs fine otherwise - it far more likely to be bad wiring connections or switches other than the advance tigger or coil paks
Those who would give up constitutional freedoms to elected officials in exchange for a false sense of security, deserve neither freedom or security.
Posted on Tuesday Apr 17, 2012 at 8:41 PM  
Yea I need to check all the connections & I'll try the shifter also. I pulled a plug wire, put an old plug on it and held it up to the plug in the block. Wanted to make sure I had a good ground. When it wouldn't fire I couldn't see any fire on the plug. As soon as I saw spark the motor would fire. That is why I said intermittent electrical. NEUTRAL switch position on your shifter yoke? It wont even turn over....... It could be a short in the kill switch though............
Finally got a couple of days off last week, went to Skiatook took an hour to get is started the first time, ran great the rest of the day. Went to Canton on Wednesday. Started right up, went up to the dam and fished a couple of hours, couldn't get it restarted. Really starting to get old.............. Fishing was bad both places. I did snag a 20lb carp in the tail, put up a great fight.


You Can Tune a Piano, but You Can't Tuna Fish (REO Speedwagon)
Posted on Monday Apr 23, 2012 at 7:57 AM  
Sunday the only way I could get it to run was by tapping on the CDI box. Got it running for a couple of minutes, then it died at WOT. A tap on the power pack and it would try to fire. Looks like I'll be buying a power pack.
You Can Tune a Piano, but You Can't Tuna Fish (REO Speedwagon)
Posted on Monday Aug 6, 2012 at 9:53 AM  
That doesnt happen to be a little charger bass boat does it
Posted on Monday Oct 8, 2012 at 4:49 PM  
Sorry I havn't read this before, but I had similar problems with a Yamaha 200 carb engine. On the left side of the engine is an inline fuse. It has no spring to hold tension on it and it fails to keep power to ignition. I cut it out and put a knife type automotive inline fuse in and never had another hint of problems.
Posted on Monday Oct 8, 2012 at 10:28 PM  
Xpress 18" boat

New CDI box fixed my problem, found one online for just under $400.


You Can Tune a Piano, but You Can't Tuna Fish (REO Speedwagon)
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