T250 Grr

I tried to start the bike after the carbs were cleaned and nothing. I checked the fuel flow and both bowls are filled. If I squirt fuel down the throats she will start, but the rpms run to 7000 with the slides closed. I shut the bike down and nothing. If I squirt a smaller amount of fuel, it will run to about 5000, respond to the throttle for about 30 seconds then die. Carbs are squeaky clean. I am at a loss.

If it is reving that high with the slides closed, you may have a air leak. Look at the carb boots.

In reply to Rusnak_322:

I had the filters off and I expected it to run high, but if I did not shut it off,it would have kept going. I will try it tomorrow with filters on.

Did you do the carbs together or one at a time? I don't know whether it's even possible with the T250, but a favorite maneuver with CB160s is to put the left slide in the right carb and vice versa.

IIRC this could cause them not to close all the way...

In reply to ransom:

???

In reply to Moparman: if you are asking if my carbs are on the correct sides, they are

I tried spraying carb cleaner and starting fluid down the throats (at different times and it behaves just like it does with fuel is squirted. It idles at 2500 and then climbs through 7,000. If I flip the choke of, it settles in at 3000 and responds to the throttle before dying.

When I just squirt/spray the left carb it idles high, but around 3,000, before dying. Spraying the right side and not the left does nothing.

Dam this thing just doesn't like to sit a day does it..? You have some sort of vacuum leak. Manifold to carb, manifold to cyl, cyl base gasket or even head gasket leak.

Moparman wrote: In reply to Moparman: if you are asking if my carbs are on the correct sides, they are

Sorry I wasn't clearer, but I was asking if you had both carbs disassembled at the same time and had put the left slide in the right carb and vice versa.

Again, I don't know whether that's even possible on this bike, but on a CB160 they'll slide right in, but the tapers where they fit the bottom of the bore and the leading/trailing edge profiles are flopped. As a result they won't seat completely and won't carburate properly at low airflow, IIRC.

In reply to 44Dwarf:

Or crank seals

yup could be crank seals but if one side is under the side cover and your spraying around the carbs look closer to the spray. Try a windex instead of a flamable water can help plug a leak darn good. also a propaine torch unlite on trickle can pin point good.