Dead spot in acceleration

[bpdchief]

When accelerating slowly I reach a spot where the engine falters, I can accelerate past that point but wonder the cause. I'm on my third tank with carb cleaner mixed in. Any thoughts? Hits in 1st at about 12- 15 mph

[jonathan180iq]

I don't really recall 1st gear being good for much after 12mph anyway, honestly. Once you get moving, you should go ahead and bump it into second.

If this issue isn't showing up at other road or engine speeds, then I would wager that your carb is good and clean and you have nothing to worry about. 3 tanks of gas with carb cleaner and that thing should be spic and span.

[Rookie Rider]

Yeah, i dont go much in first gear. I take off and go maybe 10 mph or 10 feet, then kick it up to 2nd gear. 1st gear sux.

[blaine]

Originally Posted by Rookie Rider

Yeah, i dont go much in first gear. I take off and go maybe 10 mph or 10 feet, then kick it up to 2nd gear. 1st gear sux.

16T front sprocket fixes that problem nicely. :biggrin:

[Road_Clam]

Originally Posted by bpdchief

When accelerating slowly I reach a spot where the engine falters, I can accelerate past that point but wonder the cause. I'm on my third tank with carb cleaner mixed in. Any thoughts? Hits in 1st at about 12- 15 mph

Exactly what do you mean by "falters" ? Is the behavior consistent every time you open the throttle or intermittent ?, we need more specific and descriptive details, remember we are looking at a computer screen not riding your bike, nor can we listen to the engine rev.

[bpdchief]

Oh come on guys... specifics????

I have done the 16t sprocket. And all are correct 1st is weak. Falters as in it reaches that point where the prudent "in no rush" rider is shifting anyway - approx. same throttle position for each gear and it acts starved for gas... but, if you twist just a hair it picks back up and takes off. Hit it like you just realized there's a truck behind you and there is no hesitation.

Maybe at 75 mpg and easy riding I should quit nit picking and just enjoy it.

[5th_bike]

Now the description of you problem reads like "if I open my throttle to a certain position, the engine will accelerate but at a certain point it will not go any faster. Then, when I open the throttle further, it will accelerate again". :roll:

Yes, enjoy the ride! :2tup:

[jonathan180iq]

Originally Posted by bpdchief

Oh come on guys... specifics????

I have done the 16t sprocket. And all are correct 1st is weak. Falters as in it reaches that point where the prudent "in no rush" rider is shifting anyway - approx. same throttle position for each gear and it acts starved for gas... but, if you twist just a hair it picks back up and takes off. Hit it like you just realized there's a truck behind you and there is no hesitation.

Maybe at 75 mpg and easy riding I should quit nit picking and just enjoy it.

It sounds like you're just hitting the flatline between what the gear can do and how much air and gas you are pouring into the engine. If you were to do this for each gear, you'll find that flat spot will be at different speeds, but it's essentially the same thing.

If you are really concerned about it and think maybe we are all nuts and don't understand what you're saying, I would check your vacuum hoses for possible aging and give the air filter a once over. But other than that, I think it's just that "dead spot" that exists on any vehicle in all gears, but at different speeds and throttle positions.

[Rookie Rider]

Blain, i would do the 16t, but im on the highway alot.

[jonathan180iq]

Originally Posted by Rookie Rider

Blain, i would do the 16t, but im on the highway alot.

She'll still pull 70 with the 16T. And if you've jetted your new exhaust right, you might get even more power on the top end. With a rich main jet and almost full throttle, you should be purring right along.