Sluggish Acceleration 1979 xs1100

[kevinbarzotelli]

Hi All
Well the bike has been serviced
new oil, filters, plugs etc.
Starts & runs lovely, but the acceleration is not smooth, once over a certain rev band the bike is fine & will cruise all day , but starting up from the lights it takes a few seconds to really get going..
any ideas guys ??

kevin.

[soccer4m]

before tuneup?

Hey Kevin,,,,how did it run before the tuneup??? Did it bog then, run bad, ???? How is your fuel filter? Maybe pull a plug and check color.....let us know to help narrow it down to a few things and not a lot......Mike in S.Diego

[Ivan]

What kind of exhaust setup do you have? Any thing else that might not be stock?

I would also suggest checking into the pick up coil check and repair tech tip.

[kevinbarzotelli]

Hi
Plugs are fine , sandy brown in colour & i've replaced with new anyway
Its running the same as before the tune up, so i obviously have the same problem.
Exhaust is 4 in 1, i'll check the tech tips
I'm thinking it can't be something major as otherwise the bike runs well.
Very Annoying though.

[TopCatGr58]

Kevin,

What rpm are you trying to take off at? If you're letting the clutch out at 1500 rpm and expecting it to pull like a freight train, well it'll pull, but with the 4-1 pipes it won't perk up until over the 3.5k mark. Also would suggest you try a 1/2 turn out of the pilot screws on each carb and see how it responds, if it bogs worse at the same rpm, then turn them IN a 1/2 turn and try again.
T.C.

[CatatonicBug]

I have a very light hesitation at times, very similar to what you describe. After reading several other threads about this topic, I have decided that I will need to replace my needles and emulsion tubes (basic dynajet kit) as soon as I can afford it ($72 @ mikesxs). I'm told it will greatly improve my MPGs too.