- no vacuum please help!
- craps out at top end
- New 80cc engine, no gas to spark plug
- is it possible?
- Zbox New Carby-Fuel Starvation ?
- Tractor 6 volt Headlight
- Bike takes a while to start
- CE Clutch Actuator
- Clutch and pressure plate
- Rear sprocket options
- CDI Ignition...
- Bike will not move at all, Clutch locked
- Loss of power
- bog down at top speed
- bike not moving
- 6 Volt Light Question...
- Help with clutch
- clutch disrepair
- new engine no start
- engine running on?
- Strong Headwinds
- first run out. wont rev up all the way!! little power.
- rear wheel bearing
- 4 stroking at high revs
- Big guy needs help
- my exhaust is turning yellow
- Does not go faster than 27mph after 4 tanks??
- Help! Exaust pipe is constantly loose..
- Chain pops constantly! HELP!
- Clutch Gear Chatter
- how do you make a water bottle gas tank
- No Gas In Fuel Line and Lots of Vibration
- Clutch Engagement~ May I Clarify?
- 1st Bike, No Go.
- carb problem?
- Clutch won't disengage! STUCK IN NEUTRAL!
- Engine not reaching top end speeds
- Help with adjusting throttle (can't go faster then 24 mph)
- Stock Kill switch (button)
- gas coming out of the air filter, big time.
- Clutch adjustment - slips when hot
- i need help my bike wont start
- Question about getting the rpm's higher?
- What is brass push-button on PK80 engine?
- carb Idle screw..help
- Blew exhaust gasket
- I think i have a air leak.
- The power of my engine is weak!!
- Lousy gas mileage, and now...
- Won't start when hot!
- Problems
- 68 spoked rim spocket mounting
- **%#*# throttel
- My new PK 80 suddenly won't accelerate
- Help!! Wont start anymore!?!?
- no spark?
- Gouged cylinder-replace it or ride it?
- Having trouble with a chain installation and some other things.
- Carb leaking on four stroke!
- Sprocket size trial and error
- 3 speed hub
- muffler fiberglass?
- What is this gasket for?
- Loss of power turning corners
- Main Jet Tube fall out!!
- Oil in mag cover
- Help- Tightened head bolt too much!
- First Post...first-timer...won't start!
- Zoombicycles centrifugal clutch kit
- my tranny seized!!!!!!!!!1
- Engaged Clutch Motor Dies???
- choke problem..im a noob
- Bogging at low speed
- Clutch adjustment issue
- A quick fix for my fuel mix! m
- mystery engine problem. (low power)
- engine rev's but doesn't spin tire.
- Engine Starts but when throttles..nothing
- Another carb question
- Clucth in at idle and engine reving out of control?
- 4 Stroke Question
- Engine runs funny and upper end
- Carburator help?
- Rough Riding at lower speeds
- engine backfires! Please help
- New bike-won't fire!
- air leaks?
- headlight questions
- First attempt isnt going so well
- Mechanical noise and oil leak query
- new build = problems
- How do I remove the magnet and the crankshaft?
- little power
- Piston Clips?
- Sprockety help for a newb...
- Hard to pedal
- Great spark... No Start...???
- ignition problem please help
- Not even a month old
- Not studly enough
- What are the worst friction drive problems you have had on the road?
- Trouble with metal plates on sprocket
- Spark Problems
- Newbie with problems
- Very Slow Fuel Flow
- anyone ever used rubber motor mounts
- Titan gearbox drain screw
- Vibration Problems
- sparkplug boot tear down
- Help: Fuel Leak
- 80CC Tops out at 18???????
- Cold starting issues
- I NEEED HELP plz
- no start after it died
- is this normal?
- How to keep clutch shaft bearings in place?
- anyone how to change the spark plug cable on the little cdi box???
- Batteries & Bikes
- chasing down the bog
- No spark
- Installed a new sprocket and now she wont start...
- 80cc Motorized Bicycle Ignition Problem
- How to pedal assist when the engine is engaged?
- rebuilding engine
- No idle
- Starving for Gas
- Carb leak
- No white wire from coil
- head gasket questions
- Noisey exhaust
- Chingrish and Speedometers
- problem solved!
- Need help
- help air intake problem
- Part Hunter 101
- Air Leak Again!!!!!!
- 2 Stroke Gas/Oil Ratio the Same with Ethanol Gas? (WI)
- Clutch lever keeper pin
- Air leak..?
- Magneto replacement?
- all fuled up but no start!!!
- problem with magneto
- Urgent question
- Digital speedometer troubles
- 41t or 36t sproket
- clutch wont disengage
- leaky carb
- New Carb problem
- Help! Engine not engaging.
- engine problems! please help
- loss of power and engine just dies, can anyone help??
- Crappy fuel line
- Wide open throttle Question
- odd clutch action internal problem???
- Help
- What holds the clutch lever in???
- losing power
- Fuel Smell
- exhaust is smokin a bit
- too much space between dust cap and bearings
- Carburetor Needle Adjustment
- Gunk on front of engine
- Sprocket wont go over coaster brake arm
- Carburator Sticks
- A little help?
- Tire Chain sprocket HELPPPP!
- Loss of power after high rpm's
- I ruined my bike the day I got my kit
- CNS Carby tuning problems
- Throttle Adjustment
- bad carb?
- If an 80cc is really a 69cc.....
- New CNS Carby: What is the 'Vent tube'?
- clutch return spring
- confused
- Weird vibration.
- Can't get motor to start
- Can't seal the Carb up!
- gas tank/chain question
- Clutch Pads.
- high idle speed.
- Engine Idle
- rattling sound?
- gas milage
- ugh.......
- Whos got a GOOD throttle set?
- boygofast engine
- High Altitude Tuning
- New discovery on slow to idle.
- 2-3 second delay on start
- surging chain problems
- break in
- loss of topend power??
- newb needs help
- Starting procedure
- Engine chokes and DIES after some seconds
- What is this?
- Slow to return to idle.
- Won't run like the rest
- Engine mount bolts
- Tire Slipping and breaking valve stem
- Cylinder Porting And Piston Mods
- sparkplugs
- hot hot hot
- i think its broken
- stupid question: about exhaust gasket
- Motor starts, but stalls right away
- Bicycle drive chain?
- BGF Sprocket w/too many holes
- Speaking of chains!?
- gremlins
- Sprocket Alignment + other issues.
- Erratic Idle
- Clutch excessively hard to disengage
- Oil Leaking
- chain too long or too short?
- still wont start
- 2-stroke How many miles to rebuild?
- carb problem
- uh oh
- ok which one is wich? ok, what way do i put the choke lever for starting?
- Ryobi Rebuild?
- not sparking :(
- CNS Carb Problem?
- Leaky Petcock
- clutch problems
- motor wont start
- Everything At Once
- pulse jet bike
- what chains are best? please help!!!
- Chain keeps breaking
- Squeal, loud obnoxious sqealing
- carb Flooding
- Engine failure, oil mix ratio and other data
- clutch intermittantly ingages with lever pulled in????
- ugh!!! chain is getting stuck in the motor
- crank case oil
- Clutch Question / First Build
- Replacement Mufflers
- chain keeps coming off when starting.
- new engine running rough
- HELP! My plug keeps closing up!!
- Sealing between carb and intake manifold
- Loosing Power/Slow Speed
- help me please....
- Loss of engine power and muffler cap missing
- 80cc engine will not start...
- Engine 'seized' yesterday
- Clutch Problem- Please help!
- Baadd Vibration