Katana stalling on hard brake!

Message

eugeart · #1 Unread post by **eugeart** » Fri Oct 07, 2005 3:05 pm

My 93 Kat stalls when I jam on the brakes and stop (yes, I have the clutch lever pulled in). Restart is needed with throttle, then it will then idle-drop and I have to apply a little throttle or she dies. This will continue until the bike sits for an undetermined amount of time.

The frustrating thing is that this problem is intermittent. Otherwise the performance is outstanding. Starts well when cold and idles fine.

I suspect its a carb problem and am wondering if I need to run some fuel additive through. I did spray the outsides and linkages etc with cleaner but it hasn't fixed the problem.

You can only imagine what this must be like in rush hour.

niterider · #2 Unread post by **niterider** » Sat Oct 08, 2005 3:54 am

I know this is a bike; however, I had a old car that would stall when going around corners. It turned out to be that the carb leaked fuel between the top cover and the carb bowl. The top was warped & the gasket did not seal. Sounds that some how the carb is flooding.

led_zeppelin · Sun Oct 09, 2005 1:33 pm

simple tune-up? new spark plugs, and bump the idle speed up a bit if you need to. i dont know much about that bike, but if it does not run off a magneta, then the timing could be off.

led_zeppelin · Tue Oct 11, 2005 3:45 pm

or, your fuel mixture could be wrong. it could work at a higher rpm and then when you throtle down real fast it might have the same effect as putting choke on a hot, running engine that is full throttle.

BuzZz · #5 Unread post by **BuzZz** » Tue Oct 11, 2005 7:21 pm

Check your floats are not set too low. It may be starving for fuel when it sloshes forward under braking and the pickup is suddenly fuel-free.

#6 Unread post by **Skier** » Wed Oct 12, 2005 8:46 pm

BuzZz wrote:Check your floats are not set too low. It may be starving for fuel when it sloshes forward under braking and the pickup is suddenly fuel-free.

This is what I would check first. Too bad it requires removing all the front fairings, airbox and carbs.

eugeart · #7 Unread post by **eugeart** » Fri Oct 21, 2005 2:28 pm

I've been a little busy and I wondered why I got no email notifiers for this problem. I thought there were no replies!

Anyhoo, I've raised the idle a little and the problem is slightly better. However I've noticed the idle is inconsistent. It will rev high for a while and then when I ride later it will idle normal or start up the stalling again.

I was thinking floats too or gunked up carbs. I'm running a little mineral spirits through on this tank to see if it will loosen anything up. I'm not even sure that stuff works.

I'm hoping not to have to take it in- I just don't have the time or patience to tackle it if I've gotta pull everything apart- but worse come to worse it goes into the shop.

nitrus · #8 Unread post by **nitrus** » Fri Oct 21, 2005 8:38 pm

do your carbs have an air-cut valve?

eugeart · #9 Unread post by **eugeart** » Sun Dec 11, 2005 1:18 pm

The bike idles high now between 1500-2000 but doesn't stall on hard brake. What?! I've been riding it like this for about 5 weeks.

I'm unable to turn the idle down any lower it seems with the adjuster knob. I'm wondering if the carbs need to be overhauled and everything readjusted.

Broke and confused before XMAS!