Please help me with my Bash 49cc By scuddy (Read 8,099 times)

[sprocket]

Sounds like you have a fuel flow problem to the carb.. you are burning gas in the fuel bowl and then it gets empty and the engine dies...need to check your fuel flow, petcock, change gas filter etc...

Might be the enricher isn't working etc

[scuddy]

Yesterday it started for a little, died. Started again and after i got it warmed up for a while it would actually stay running and i got about 20 mins of riding in before i had to go to work. I need it to be more reliable though. And i cant trust it because sometimes it just wont start. And i must mention i can never get it to start with just electric start. And it still takes a few very fast kicks to get it started.

[silverfox96]

You might consider taking that battery out and having it load tested, too. Autozone of similar parts places will do that for free. Be very cautious about kick starting it! These kick starters are only meant for emergencys and if you kick them pretty hard, you can actually crack the case! Get the electric starter working properly.

[scuddy]

If i get a new battery would it be easier to start with electric? Maybe because it has more juice it turns over faster? What kind of battery is good for this scooter and how much do they go for?

[scuddy]

What type of bettery should i get and where can i pick one up? walmart?

[sprocket]

Scooter batteries are fairly small and there are a couple of sizes.. you could get a mower battery at Walmart but it won't likely fit in the battery box.. and you will need to wire it in under the seat.

But scooters will run with NO Battery.. so I don't think that is your problem...certainly a new battery will turn the starter faster, but if it hasn't started in a couple of pushes of the starter button something else is wrong...

As advised by silver fo get your battery load tested first.

[scuddy]

Ok some how i got it to where it starts now with 1-3 kicks. But it runs horribly for like two miles. Sputtering up to speed. And will only top out at like 10mph. Then it slowing starts going a little faster after about two miles but still sputtering. And then eventually it starts going pretty fast. But still sputters to get up to speed. I don't know how to describe what its doin :/ Any idea whats wrong their??


And no haven't been able to check my valve gaps. Thats seems like a little be out of my skill range with engines. From what I saw anyway.

[Alleyoop]

Have you adjusted the Carbs Fuel Ratio Mixture? Does your carb look like this? If so NOTICE the AIR/RATIO screw on the Carb, Turn it CLOCKWISE UNTIL IT STOPS then TURN IT OUT 2 1/2 turns and let us know if its better or what.
Alleyoop
This is the LEFT SIDE OF THE CARB:



This is the RIGHT SIDE OF THE CARB:

[Bashan]

You have multiple problems, it's kind of hard to sort them all out. Here are my suggestions:

• Check your auto-choke, here's some info.
  
• Did you get a crush washer on the plug?
  
• You're going to have to check your valves, it's not that hard.
  
• You're going to have to clean your carb.
  
• If your battery tanks after a few hits on the starter it's toast. Replace it.
  
• Check all of your intake connections including the manifold.
  
• Here's a checklist you could also go through.
  

[scuddy]

Awesome Alleyoop ive been looking for the air mixture screw. Im going to try adjusting it tomorrow. i also cleaned out the kick started and it feels so smooth and comes back up smoothly now. And im going to replace the battery asap. Ill let you guys know if I have any luck with it. Earlier today it started 2nd kick and ran for 20 ft, died. Ran again for 20 ft died. Then ran for, spurring about 10mph, for awhile. After that it slowly starts running better and faster. And for some reason sometimes after it dies. It just wont start unless you leave it sit for at least 5 mins.

[Alleyoop]

Here is how to adjust your Fuel Ratio Mixture:
Take your time don't rush it always wait about 10 seconds after each adjustment to allow the motor to catch up with the new setting.
Alleyoop

ADJUSTING YOUR AIR/FUEL MIXTURE:
YOU WANT THE HIGHEST RPMS OUT OF THE AIR/FUEL MIXTURE SCREW:
Before you start it Turn the Air/Fuel Mixture Screw CLOCKWISE UNTIL IT STOPS do not tighten it just until it stops BUT COUNT how many TURNS IT TOOK TO CLOSE it. Then Turn it COUNTER CLOCKWISE the same amount of turns back to where it was.
Start your scoot and Get The Engine Nice and Hot about 10 minutes so that the Enricher is no longer Allowing Extra Fuel to come in. Then do the following to fine tune the Air/Fuel Ratio:
RICHEN THE AIR/FUEL MIXTURE:
1. Turn the Air/Fuel Mixture COUNTER CLOCKWISE 1/4 turn and wait 10-15 seconds to let the engine catch up with the new setting.
a. If the RPMS go up REPEAT 1 UNTIL the RPMS GO DOWN OR NO CHANGE.
b. Then TURN the Air/Fuel Mixture 1/8 CLOCKWISE and that should be your highest Air/Fuel Mixture setting , GO TO 3.

*****If on the FIRST 1/4 TURN from the STARTING Position IN #1 ABOVE the RPMS GO DOWN OR NO CHANGE , turn the Air/Fuel Mixture Back the 1/4 turn to the Starting position and wait 10-15 seconds until the engine catchs up and go to #2*****

LEAN THE AIR/FUEL MIXTURE:
2. Turn the Air/Fuel Mixture CLOCKWISE 1/4 turn and wait 10-15 seconds to let the engine catch up with the new setting.
a. If the RPMS go up REPEAT 2 UNTIL the RPMS GO DOWN OR NO CHANGE.
b. Then TURN the Air/Fuel Mixture 1/8 COUNTER CLOCKWISE and that should be your highest Air/Fuel Mixture setting, GO TO 3.

IDLE SPEED SCREW:
3. If after adjusting your Air/Fuel Mixture your idle is to fast Turn the IDLE SPEED SCREW COUNTER CLOCKWISE until your Rear Wheel JUST Barely wants to Turn or around 1500-1800 rpms.

4. If 1 or 2 above DOES NOT produce any RPM Change you most likely have a CLOGGED PILOT JET "OR" you did not get the ENGINE HOT ENOUGH and you were working against the ENRICHER which has not yet closed off the extra fuel. If the engine was nice and hot running for about 10 minutes and the Enricher was off then its time to take off the Carb and Clean out the Jets and all the Carb Passages.
If adjusted correctly you should be able to give the Throttle a QUICK half turn and the Engine should REV UP with no bogging hesitation and get a nice VROOOOOOOOOOOM. The Rpms should come down nice and settle at the Rpms you set your Idle to.

[sprocket]

A common mistake when adjusting the air/fuel mixture is people don't run the scooter long enough before they start adjusting... you should ride it or idle it for at least 3-4 minutes to be sure the enricher is closed...

The engine needs to be fully warmed up!

[scuddy]

Does the engine need to be able to idle in order to adjust the air/fuel? because it doesn't idle.

[sprocket]

Yes it must idle.. if it doesn't idle you have other concerns to fix first...

Try turning the idle screw all the way in gently and then turn it out 2.5 turns. This will get you in the ball park and the engine should idle...

[scuddy]

Alright i haven't had time to sit down and adjust it yet. but i make sure i start it and rev the engine every day. Today i left it on the trickler while starting with electric and it worked! Started fairly fast. Reved for a minuet and died. Did that a few times before it would stay running. Definitely seems like its only getting the gas that drips into the bowl over time then dies. Unless its warmed up for 20 mins or so. I should be able to adjust it tommorow and let you guys know. I really appreciate the help its already come a long way from when i got it.