Bike won't accelerate

[ribbert]

Noel-  I was poking fun at Rich a bit, -he was so emphatic...  In the event you did not get the subtlety of it...

Dan, the humour was not lost on me. That's why I replied to his original post. My post was entirely unrelated to your comments and not in response to them.

Single posts do not have much impact when challenging the status quo and I thought I would just add my own observations to help debunk this idea about the coils. Most likely though the coil theory will continue to circulate until it is decreed false by a higher authority.

Noel

[RichBaker]

The ignition does NOT drop 2 cylinders!! I wish people would stop perpetuating this MYTH.....  The fuel pump is shut off, which causes the float bowls to run dry, which signals the rider to switch to reserve.   

So, what you're saying, is that the bike drops 2 cylinders to SAVE ON GAS, when it's low -Ahhh  -That clears that up -thanks!



Dan

I see what you did there......   

[chocker]

Hi,
just to be clear. When this happens to me, I do not switch to reserve. As I have said I down shift then upshift and it works again and doesn't happen again during the ride.

Mark

[fintip]

Right, forgot the original point of this thread.

Can you describe more the nature of the feeling the bike gives? I remember a friend's '83 R100RS that needed a top end rebuild would kind of act like this; originally I thought it couldn't pull up to redline in 4th or 5th, but if I slammed the throttle back in third and didn't shift until the revs were high enough, then I could shift up and have access to the top.

It's a symptom of an underpowered bike, I think. Might have low compression. Would fit with hot vs. Cold symptom, as well.

[Pat Conlon]

Hey Mark, I would start with the basics.... adjust your valves, then sync. your carbs, set your idle fuel/air mixture (blip test) then set your idle speed.
See if that helps...
Proper Carb syncing is the most important.

If there is no improvement I think Andy may be on the right track. Definitely Carb related.
Something could be happening with the slides. Sticking? Perforated diaphragms? A blockage in the vacuum circuit?

Your FJ should pull cleanly from any and all RPMS, if not, something's wrong.