hippiedreads
XS650 Enthusiast
Ah okay that helps clarify greatly. Even though I'm using the stock 45 pilot jet you'd go down to a 40?
thats a good suggestion 2M I didn't think of that. This over rich idle is a bit strange given the info we have but the wrong pilot would certainly cause it.Have a look thru the carb guide, and ensure that you've got the correct pilot jets for your bowl type, i.e., BS30/96 vs VM22/210. And, for that matter, the correct bowls for the carb bodies...
Have a look thru the carb guide, and ensure that you've got the correct pilot jets for your bowl type, i.e., BS30/96 vs VM22/210. And, for that matter, the correct bowls for the carb bodies...
However maybe someone can explain this to me, with this current set up of stock spark plug boots and the resistant plugs I can't get it to even hit. When I pull the left plug and ground it to the motor the right side will try to fire. When I pull the right side and leave the left side in the cylinder then the right one will fire. If I have both in the cylinder neither will fire. Both have a good solid big bright blue spark outside of the cylinder..
sorry to disagree 5T but If your engine is in a good state of tune like mine it should idle happily and stable at 850 -950rpm .I never get random stalls at traffic lights or on deacceleration but to be honest we don't have a lot of them out here in the countryside. The difference in oil flow between 950rpm and 1200 rpm is negligable and Yamaha designed the engine to have more than sufficient oil flow with an adequate margin.The idle speed spec for these bikes is 1200 RPM. Yes, 1500 is too high, but 850-950 is too low. I tried running a lower idle speed when I 1st got my 650. All my other bikes used a lower speed and the 650 just sounded too fast at 1200. The bike would randomly stall at stops using the lower setting. Setting it to spec cured that. I've grown used to the 1100-1200 RPM idle now and it just sounds normal. I feel it is required. Besides the stalling, at that lower setting you will have little, if any, charging going on and less oil circulation.
I see in your video you're running the pleated pods. They don't work right on CV carbs and may be contributing to your troubles. Also many have an inner lip on the mounting flange that can partially block the air ports .....
I would run some tests with them removed.