idle adjustment

anyone know where an how to adjust the idle xj750 it wont idle without choke and of course maybe riding it with choke is causing it to chug

 

Sounds like a dirty carb problem rathar than an idle knob problem.
Nevertheless, the idle adjustment knob is located between the #2 and #3 carb floatbowls. Easiest access is from the right side of the bike. Wear a heat-resistant glove, 'cause you'll want to adjust it when the engine is at operating temperature.

 

Clean your carbs ( Church of Clean clean)
Check/adjust your valve clearances

THEN worry about idle speed when you're syncing the bike

 

the carbies been cleaned only had this problem since i got them back thanks blokes for the info

 

If the idle adjustment dosen't help, then please report back as to how the carbs were cleaned. Not being able to idle without choke can be a sign of failed throttle shaft seals (among other things).

 

can idle without choke now and rides a bit better seems to be running a little rich but i broke a spark plug wire taking it off and its just sitting there with little insulation i have new one on order the only other problem i have is i just got the indicators and horn working and last ride i had none of that is working and theres no indicator signals on dash either i had those before i fixed this last time

 

Classic restricted pilot circuits problem having to run the choke to get these XJ's to idle. Your carbs may have been cleaned but maybe whoever did it overlooked some of the passages that involve the pilot circuits.

 

Who cleaned them?
How did the clean them?
EXACTLY how did the clean them?

 

I agree with the others...if the mix screws are between 2.5 and 2.75 turns out and it won't idle w/o the ec the problem is in the carbs.

Gary H.

 

You have a new spark plug wire ordered? They are integral to the coils. Are you splicing in the new wire?

If it's still not running correctly then you do need to revisit the carbs. You should not be running rich. When fully sorted an XJ can be compared favorably to a new inline four in terms of sound and feel.

 

it was idling ultra low on choke before i adjusted the idle at the carbs ..im not replacing the whole coil wire just the end bit that goes on the spark plug.. i had the carbs cleaned at a motorcycle engineers he told me the float needles where very warn but there still holding ..maybe i should order some kits from taiwan they come with all new jets and needles seems to be more in them then the ones from america and uk http://www.ebay.com.au/itm/Carburet...920277?hash=item4199c860d5:g:ZD8AAOSw3ydVqsSV

 

Order from xj4ever. Otherwise, you'll fight and fight and fight, find out the problem is with the eBay kits you bought, end up ordering from xj4ever ANYWAY..... When you could have saved your money and just ordered the right stuff to begin with....

Hmm float needles "very worn but holding", huh? Yyyeah, riiiigghht ......
And just how did he determine that they are ' very worn'? I think it would be a big help for US to know how to determine that, too--

FWIW
Dave F

 

thanks guys think its all good now

 

How did you end up fixing the issue?

 

November 16, 2015

5.5 yrs later.

Ant797 hasn’t been seen since August 20, 2016

 

And it doesn't look like he was willing to take some good advice...

 

Probably just sold the bike and moved on.