[Skinnnybiker]

Hi, i just bought a rough pocket from a barn and wat to restore it. Id had no spark and pull cord was ripped. I fixed the spark, fixed the pull cord, clean the carb. It has compression, i took the cylinder out and everything looks ok (rings are free and piston is good). I tried everything i could think of, i put gas directly to cylinder and still nothing.

If one of you guys have a small idea please let me know cuz i want to bring this bike to life.

Thank you 🤜🤛

 

[kray15]

When you check spark are you putting the spark plug up against the cylinder when you pull it? If its sparking while not touching the cylinder ( or touching any ground) then you have a grounding issue. Is the spark plug wet at all after you've been pulling it? How's the idle screw? hows the choke? Is there full getting inside of the float bowl?

 

[Skinnnybiker]

When you check spark are you putting the spark plug up against the cylinder when you pull it? If its sparking while not touching the cylinder ( or touching any ground) then you have a grounding issue. Is the spark plug wet at all after you've been pulling it? How's the idle screw? hows the choke? Is there full getting inside of the float bowl?

I check for spark against the cylinder and has a consisrent spark, yes the spark plug is wet, i tried the idle all in, all out, chocke on, chocke off, yes fuel is getting to the carb because it gets full of gas and leaks.

 

[MrKitty]

when they refuse to start I will use a little bit of starting fluid even though I know it's bad for two strokes just to see if it will pop off.

If it won't pop off you might have a bad woodruff key ( a sheared key ) you will have to take the flywheel off to check it but sometimes you can just take the nut off and look with a flashlight and see if the keyways are lined up if they are then it's okay.

I have seen from the factory where the woodruff key was not fully inserted and the flywheel after a while was able to twist on the shaft and throw the timing off.

Sometimes the crank seals will harden with age and cause a vacuum leak but most of the time when you have this problem the engine will still kind of start.

If you do happen to have a bad crank seal 90% of the time it's on the clutch side

 

[Atvrunner2]

I agree, check the timing key and crank seals.

 

[Skinnnybiker]

when they refuse to start I will use a little bit of starting fluid even though I know it's bad for two strokes just to see if it will pop off.

If it won't pop off you might have a bad woodruff key ( a sheared key ) you will have to take the flywheel off to check it but sometimes you can just take the nut off and look with a flashlight and see if the keyways are lined up if they are then it's okay.

I have seen from the factory where the woodruff key was not fully inserted and the flywheel after a while was able to twist on the shaft and throw the timing off.

Sometimes the crank seals will harden with age and cause a vacuum leak but most of the time when you have this problem the engine will still kind of start.

If you do happen to have a bad crank seal 90% of the time it's on the clutch side

Hi and thanks for the info, there was none of the above, the problem was the pull cord was too small and the engine was not spinning enaugh and i spent 3 days just to figure it out.
Now it starts only on starting fluid and only for 2 seconds then dies. the back wheel spins like its on throttle all the time. The idle screw is all the way in. I could not get it to idle. What could it be?

 

[MrKitty]

You have the slide in backwards.

Check the jet shine a flashlight throw it and make sure you can see light the hole is very tiny and easily completely clogs

 

[Skinnnybiker]

You have the slide in backwards.

Check the jet shine a flashlight throw it and make sure you can see light the hole is very tiny and easily completely clogs

Already cleand the carb, and the slide goes in one way so thats not it.

 

[MrKitty]

Just curious which one of these carburetors you have

 

[Atvrunner2]

Sounds like you are not getting fuel to the engine. And maybe the clutch has a broken spring. Check that stuff too. If it's that last carb, the petcock is probably bad. They go bad fast.

 

[kray15]

is the rear wheel off the ground when you set the idle? So it won't idle for whatever reason and so you have the idle screw all the way in to get it to idle? If you don't have the rear wheel off the ground, get it off the ground and try starting it up. The idle screw should only be slightly in. You should also check the clutch springs like Atvrunner said. What color is the spark from the spark plug? When you say you fixed the spark (cause it had no spark) what exactly did you do? What is the coil gap on the fly wheel/how did you set it? if that is too big you will get week spark.

 

[MrKitty]

Sounds like you are not getting fuel to the engine. And maybe the clutch has a broken spring. Check that stuff too. If it's that last carb, the petcock is probably bad. They go bad fast.

One thing to note is sometimes on the P33 carbs petcock just turning it plastic or rubber bits will Slough off and go right into the jet and clog it a micro fragment of anything in the fuel system and you're having a bad day.

 

[Atvrunner2]

One thing to note is sometimes on the P33 carbs petcock just turning it plastic or rubber bits will Slough off and go right into the jet and clog it a micro fragment of anything in the fuel system and you're having a bad day.

For sure. It a vicious cycle. 😂😂