1996 Yamaha Waveraider problem, please help [Archive] - Yamaha Forum : Your Yamaha Motor Products Community & Resource

: 1996 Yamaha Waveraider problem, please help


2Sweet
07-09-2011, 09:40 PM
Ski is a 1996 Raider 1100 triple. Had it for like 10 years. Been a good ski. I'm not real up on the technical jargon so I'll put it as best I can.

Trashed a piston about 3 years ago, had a guy fix that all up and the ski ran good but it seemed a very little bit slower after that, but ran for 2 years just fine.

This year we take it out and it's not running properly.

If you start it and immediately go WOT it will take off perfect but then cut out (and sometimes die but usually just cuts out) within 5 to 10 seconds.

If you start it and let it idle for 30 seconds you have to feather the throttle to get it to full speed. Once at full speed, you have to keep feathering the throttle to keep it running or else it cuts out alot. Seems to be running close to normal top speed. (speedo is junk, reads like 22 WOT but that's obviously wrong)

So, 1st thought was fuel. Blew out all the lines and inspected the fuel filter. All seemed ok.

Brought it to my engine guy and he checked compression, about 118 on all 3 cylinders. Good there.

He found there were BR8ES plugs instead of recommended BR8HS. Put in the BR8HS but no/very little change.

Carbs were fine when the pistons/cylinders were done 3 years ago. Gas is from last year but was treated.

Been reading everything I can find but haven't come across someone with the same problem....

My next thought was fuel pump maybe? My guy is having problems finding the problem in the garage because it seems to be running fine there.


Please help!

Importrepairguy
10-17-2011, 06:28 PM
If the Carbs are clean & have been inspected (visually & pop-off tested), inspect fuel pump, sounds likes it's working if it runs on all 3 cylinders.
I'd suggest, pulling stator cover & inspecting the flywheel & pickups for rust, etc.. Sounds like an electrical issue if not fuel related. Another quick fueling test is to install a primer kit, while at WOT & symptoms arise (can be tested tied to a dock) try squirting fuel (using primer plunger) to add fuel to engine, if it picks up & does not bog anymore it's obviously fuel related. If no change, inspect ignition system.
Also, if carbs are removed for cleaning/inspection, pull the intake & inspect the Reeds, the pedals may have lost memory.

Just some ideas, hope they help.



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itsmygame
10-21-2011, 08:04 PM
even treatet gas is good for a max of 6 months. Should drain all gas for extended down time. Check ign coil sometimes they work at idle but when they heat up they fail.