flat spot at 1/4 throttle opening

[tkent02]

Stock box w/filter oiled and sealed up tight?
Have you replaced the intake orings?
Carb vent tubes open and flowing freely? (I have cleaned out more than one spiders' nest in those things...

1980 750E, stock is a paper filter, there are no O rings.

[dwfranke1]

yes it is a stock airbox and i dont think this filter requires oiling, everything is sealed and clamped tightly

[Dave8338]

1980 750E, stock is a paper filter, there are no O rings.

I just keep learning. OH...750...can read but don't always.



Check the length of the fuel line and see that the top of the loop is not above the center of the carb bodies. DITCH THE ADDITIONAL FUEL FILTER.

[dwfranke1]

CHEF right now i have 2 shims on each needle, you suggest 1 more for a total of 3?

[dwfranke1]

more info, the bike idles smoothly at 1100 rpms and has loads of topend, its just that middle part thats the problem

[Dave8338]

Lean on the pilot circuit. Stock air jets?

[tkent02]

Is it lean or rich when it is having this problem? Sounds like too lean.
Easy enough to try a different number of shims.
First, are the float levels adjusted correctly?
Are all of the jet sizes correct?

[dwfranke1]

all stock sizes and i dont know if the floats are set correctly

[tkent02]

That would be a good place to look.

[dwfranke1]

thanks for the suggestions, its off to bed and into the carbs in the morning, i will read up before starting to see if more help was offered

YOU GUYS ROCK

[dwfranke1]

can you send me a link to the procedure for setting the float level, i cant seem to find it and i know someone her has it, PLEASE

[tkent02]

Try Cliff's site. He has everything.

[teddux]

I saw this in a previous post:

http://www.iwt.com.au/mikunicarb.htm

I would put the needle BACK where it was.
What's your ALTITUDE?

[Guest]

Did you remove the plastic spacer over the clip on the jet needle and replace it with some washers aka shims?

[dwfranke1]

the plastic was replaced by the PO with 4 1mm washers