81 CB650 carb problem
Posted 08 July 2012 - 04:45 PM
Posted 08 July 2012 - 08:09 PM
It's too lean if you have to have the choke out to make it run.
You mentioned pods....did you also modify the exhaust?
Did you put in bigger jets or use the stock ones?
I put the bigger jet in the main, the idle jet is permanent unless you know magic(or machining), exhaust is strait no baffles, cut off right behind the crossover(4 individual). When i rebuit the carbs i do believe they all run off of one central accelerator pump(the diaphram seemed worn but functional) is this true? also the slides don't seem to slide very much,which leads me to think that i have a lack of vaccum, I took a lot of plastic canister type shit off and I think this may be hurting me.
Posted 09 July 2012 - 07:31 AM
Not real sure on the CB650....hopefully someone else will chime in.
Definitely check for vacuum leaks. Make sure all the little hoses you disconnected are plugged. Use WD40 or carb cleaner to spritz around the carb connection boots/flanges...be very careful if you use carb cleaner VERY FLAMMABLE......if the motor revs raise from idle when you spritz, you got a leak.
Might be worth the time to pull the slides and make sure...absolutely sure....they aren't hanging up somewhere. Pull them, rub them down with steel wool, clean them well.
I'm just telling you what I would do....I'm no pro by any stretch of the imagination.
Posted 09 July 2012 - 08:28 AM
There's a fine line between genius and fruitcake...
I try to walk that line
Posted 09 July 2012 - 09:20 AM
this happens alot. That port needs to be open to atmospheric pressure..
Pull off the filters and see if it improves dramatically if so look in the filter and see if it blocks it when installed.
You can cut a notch in some of em and still filter air. Some no.. Seen this with places that sell cheaper filters and
just go by filter side diameter and figuire its ok.. THERE ROUND OR FLATSLIDE filters.. were it doesn't matter
Posted 13 July 2012 - 09:09 PM