Hey Thanks so much for your advice. It's nice to finally understand what I'm looking at. It's also concerning that it'll cost so much $ to check the ECU. I started using gasoline with no ethanol which I'm hopeful that makes a diff. I soaked the carb for a few hours today. Fingers crossed it works.
There is no float or jets on teh carb. Every screw is out of it.
Scooter to answer your question, it rides really nice. The scooter is very smooth, my only qualm about it is the long term comfort in the saddle. One hour on it and my butt is sore. Other then that, it's a blast.
Last Edit: Nov 15, 2014 18:23:26 GMT -5 by warcamel
Alleyoop if it is just a throttle body...will it have jets? If so are they in a different area? I googled EFI throttle bodies and it does look like that. I included some pictures from EVERY angle of the carb.
Question - if this is an EFI do they not have jets?
I had a neighbor who is a mechanic (but not a motorcycle/scooter mechanic). He was perplexed and had no idea. The carb is all one piece.
Last Edit: Nov 15, 2014 17:42:08 GMT -5 by warcamel
My first time on the forums, nice to see an active community. I have a Yamaha Morphous 2006 and since it's not a popular scooter I have a really hard time finding information on it.
Issue - If I give full throttle the engine stutters. (this happens around 35-42 mph) It makes me back off the throttle before I can go full bore again. This problem has surfaced around 2k miles ago, and I've yet to isolate the issue.
Question 1 - I've cleaned the carb out about 5 or 6 times over the last 9,000miles. I've NEVER seen a jet to clean on it. I let it soak in carb fluid for a few hours and that does the trick. Is there jets on the Morphous? Where are the jets if so??? If you have a pic I'd be so grateful.
Even soaking the carb it doesn't solve the engine stutter issue. I changed out the air box because I had a hole from when the rear tire blew up. I've done spark plug, air filter, coolant, oil, I even run with stabil in the gas tank.
Anyhow I'm hoping a fellow owner can help me out. Thanks again