I once had a CBR that I did a lot of miles at a constant speed (120km/h) and by a lot I mean 16000 miles. No spamming please, keep it real. Please consider that someone might just do what you tell them to do. When I am trying to go above 30 mph or trying to accelerate from 2nd gear & above, I am experiencing missing beats of the bike as I open the throttle, and it comes back to normal when I drive slower and the throttle is down. Ohm out both coils, primary and secondary windings. like you said , it sounds like its starving for fuel. [–]AVeryHeavyBurtation 2 points3 points4 points 5 years ago (3 children), or (c) rusty tank leading to (c1) stuck open needle valve and or (c2) clogged ports and/or jets and/or other orifices or (d) disintegrating air filter or (e) tear in diaphragm or (f) passage finally got 100% clogged with general crap or (g) spontaneous gasket/o-ring/felt seal/v-seal failure, [–]MisterShineH2 Ninja ST2 Le Mans II V50 Ténéré CB400F CD200 NMax 125 CB125 2 points3 points4 points 5 years ago (2 children). Winter storage for 71 CL175/73 CB450, Mystery of the backwards-only bike SOLVED 🤦🤦🤦. What this caused was a loss of power or spluttering as I tried to power over 120 km/h as in overtaking or the like. I have a situation. If not then it may still be too rich (bad jetting/too high float level) or it may be timing related (highly unlikely). He could not locate the problem & is confused too.What do you say could be the problem ?? Bike fixed. If you can't answer the questions definitively and discount anything brought up to you we can't help. I have a situation. I have a 2003 Yamaha V-Star 650. In this version sold from year 2005 , the dry weight is and it is equipped with a V2, four-stroke motor. Let me preface this with a brief statement: I don't know know much about engines at all, but I'd love to be able to upkeep my own bike eventually. Shouldn't be a problem as these VStar airboxes have nooks and crannies to hold oil overflow anyway, but if you're got the tank off as mentioned below, might as well. You can reach him through this website:http://webslingercycles.com/650Vstar.htm. Sputtering / Backfire - No power 2001 Yamaha V-Star 650 Custum Hey all, I have a question. | Engine vacuum is increased and the carburetor is sucking harder than normal on all the jets, ports, passages and that expensive rubber diaphragm. Through the parking lot, everything was fine, place was closed and I always leave fast through the empty parking lot after work. If I were you i would get the intake back to stock unless you really know what you're doing with tuning the carbs. When I am trying to go above 45 mph or trying to accelerate, I am experiencing missing beats of the bike for split seconds, and it comes back to normal when I drive slower and the throttle is … It’s a champion by unanimous decision. I actually nicked my front cylinder coil with my drill, and can see metal through the scored outer casing, so I covered it with electrical tape and that was 15k+ miles ago. I bought my XVS 650 V Star Classic Cruiser 10 months ago and I have never been happier with a motorcycle. Bike was built in Power Choppers Company. Rendered by PID 9047 on r2-app-042b1b8a9391a6efc at 2021-02-06 15:38:53.499144+00:00 running 843aeaa country code: JP. Ignition relay can also be the culprit acc to one of the experts. Also the vacuum hose for the intake doesn't need to attach to anything, mine doesn't. I think the V-Star 650 will be a huge disappointment in the power arena after the Vulcan 500. you have nothing to lose, at least you will know either way. Carb sync isn't too bad just need a vacuum gauge. away . Your fuel cut off solenoids may not be working properly, this will negate them. K&n filters can make the bike run too lean which could result in burned valves and other bad things (and good things too (more power, better throttle response, cooler sounding exhaust)). If I have to do it again, I won't miss that oring anyway. But most carb glitches are still caused by people fucking with them. well the timing is not adjustable. Didn't see anything else that stuck out. Just recently I am experiencing a loss of power when riding. I did find a cylinder head vent hose off at the air filter housing and reattaching that, did not fix it like I had hoped. She don't ride it much. Or get a disposable if you don't want to monkey with it. Same with the iginition coils. Or maybe it's new gunk, but it just dumps right out like sand. 01 Yamaha v-star 650 loss of power and backfiring. I realized why it was so clean while I was cleaning the carbs. No matter what speed it is. (c) Agree as well. It's fixed!! I am unable to catch up to the freeway speed when I get on the On-ramp. I am confused over this issue.So far an experienced local mechanic has looked into it. No shade tree stuff. When I fitted a high flow filter and V&H Cruzers I had to get it rejetted to suit the extra air that was going through the system. But I don't want to do the carbs. [–]bubbak427[S] 0 points1 point2 points 5 years ago (1 child). 2010 Yamaha V-Star 650 Custom . Please call us at: 1-800-992-4993 (Toll Free)/Yamaha/V Star 650 (XVS650)/2016 Just recently I am unable to catch up to you we ca n't help need a vacuum gauge closed. 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