1989 moto 4 250

[jashadams]

Hey first post here got a moto 4 250 that I'm fixing bought it for cheep she was running before I flooded it. Pushed the bike back and started tearing it apart and got it running again my issue is she idles way to high even after messing with the carb screws now I don't know a lot about bikes but hoping someone else dose.

I replaced the carb with a used one opened it up and it don't look like it's dirty but she won't run with the original carb

[Mech]

So both carbs are letting it run too high at idle ?

You might have an air leak between the carb and manifold..

[Mech]

If this bike got enough water into the cylinder to lock it up, you might have broken the key in the flywheel and the ignition timing might be too far advanced..

[jashadams]

1 hour ago, Mech said:

So both carbs are letting it run too high at idle ?

You might have an air leak between the carb and manifold..

 

it wouldn't run on the old carb at all

 

 

[jashadams]

1 hour ago, Mech said:

If this bike got enough water into the cylinder to lock it up, you might have broken the key in the flywheel and the ignition timing might be too far advanced..

Is there any way to test this without tearing down the motor it flooded from the exhaust not the carb 

 

[Mech]

If you have a timing light it's an easy check.

Was there water in the cylinder when you got it home ?  It may have died because of a wet ignition and so stopped running before the engine filled enough to do any mechanical damage..  If you had a good air filter it shouldn't really have done it..

From your description it doesn't really sound like it should have done it.. Have you checked the throttle cable has freeplay, and free play when the bars are turned ?  You can check for air leaks into the inlet manifold by spraying a bit of starter fluid around near there while the engines running. If there's a leak it will start revving..

[jashadams]

4 minutes ago, Mech said:

If you have a timing light it's an easy check.

Was there water in the cylinder when you got it home ?  It may have died because of a wet ignition and so stopped running before the engine filled enough to do any mechanical damage..  If you had a good air filter it shouldn't really have done it..

From your description it doesn't really sound like it should have done it.. Have you checked the throttle cable has freeplay, and free play when the bars are turned ?  You can check for air leaks into the inlet manifold by spraying a bit of starter fluid around near there while the engines running. If there's a leak it will start revving..

Thanks I'm gonna gonncheck some of this now 

 

[Mech]

Actually..  haha.. I wasn't thinking straight.. The timing light isn't going to confirm the ignition timing.

Check the throttle cable.

[jashadams]

25 minutes ago, Mech said:

Actually..  haha.. I wasn't thinking straight.. The timing light isn't going to confirm the ignition timing.

Check the throttle cable.

Actually I got it running decent and got her all back together turns out it was the hand throttle it was bent up causing the carb to be constantly open  video attached is before I put the plastics back on still waiting on a new throttle but it works 

 

 

[Mech]

Good one.

Always check the simple things first.

[Gwbarm]

I suspected that , but figured that was the first thing you checked, good you found it.

[jashadams]

11 minutes ago, Gwbarm said:

I suspected that , but figured that was the first thing you checked, good you found it.

Yea I feel stupid now for not checking it