DC, do you have overflow tubes?
If you do, remove the rubber overflow lines from the drain nipples on the carbs and put the petcock on prime without the bike running and see if any gas is coming out of any of the carbs. You could have a float needle that's not sealing all the way letting too much gas into the fuel bowl.
How does the bike run just sitting at idle for a couple minutes?
I was going to suggest checking plugs, plug wires, coils. But the symptom doesn't sound like that. Vacuum might be the culprit. Hoping a carb guy responds soon to diagnose. My approach would be to check the simple stuff first then send the carbs to some one to set up properly.
Hi guys,
I went for an investigative ride for this post...
This is what happens:
- when I grab a fistful (suddenly accelerate) in any gear over 30mph the bike seems to bog down
- especially noticeable around 3k+ rpm
- bike shakes
- sounds breathy
- gentle acceleration does not have any issues
- last fill up was yielding 32mpg. I normally get 38mpg mixed hwy/city
- I first noticed this about a month ago JUST after the bike was sputtering running out of gas and after I flipped to reserve
- This bogging and shaking happened a year ago for one day, but after I rode it hard for 15 mins it came back to normal the next day
- start/idle/low speed runs fine
- bike will roll in first gear w/o cutting even at 500rpm
- I have steve's 2 min mod and overflow tubes
Hi Turbo,
I think I will let a couple of tanks run through. I think there might might be water somewhere. I used to read MOB always talk about water in the tank. I will use Heet. You all like it.
This problem started after I moved to reserve on my ride back home. I exercise the reserve from time to time so it is used. Maybe not as much as you.
But the thing is wouldn't bad gas cause issues through all gears, speeds and rpms?