Why does my moped shut off when I give it gas?
This can be caused by a faulty petcock (or vacuum leak), bad hoses, clogged fuel filter, stuck float, any of which could also be exasperated by low quality gas. You said you bought the scooter new.
What causes a scooter to start but not run?
If your scooter starts but won’t rev or run well, there are basically five most probable areas of trouble: Problems with fuel flow. Problems with the spark. Air/vacuum leaks. Problems with the carburetor.
Why does my motor scooter keep getting clogged up?
Your air intake filter can get clogged up over time. The air filter is the either cotton or foam cup shaped piece fitted to the side of your motor scooter. The role of the air filter is to ensure clean air is provided to your engine, one of the key components of a combustion engine.
What to do if your motor scooter is losing power?
A spark plug, by its nature, generates sparks so you MUST NOT use shot blaster or abrasives to perform a spark plug cleanup. Instead, use a special plug cleaner which you can pick up from any Auto Store. Use a non-abrasive cloth and a knife to finish the job, scraping off the dirt on your plug.
What should the valve gap be on a 150cc scooter?
A 150cc needs its valves gapped at .004 inch for the intake and .005 for the exhaust. The same for a 250cc from what I hear. Move through the checklist above, but if you need any more information on how to do any of the steps and I haven’t provided a link, then scroll back up to the search box and enter in a search term.
What causes a backfire on a scooter engine?
Improper Fuel Balance. In order for your scooter to run correctly, the balance of fuel to air must be just right. The type of backfire that occurs within the engine is caused by the fuel mixture containing too high a proportion of air, while the exhaust pipe explosions are generally caused by fuel mixtures containing too little air.
How to stop a scooter from losing power under acceleration?
– Start with adjusting the idle screw and fuel/air mix out two turns. – Start scooter and adjust idle screw to the point where it is at highest RPM without rear wheel rotating. – Adjust fuel/air mix screw until scooter accelerates without bogging?? I guess the next logical step is to clean out petrol tank and lines!! Click to expand… Bingo!
What happens if an explosion is improperly timed on a scooter?
If the explosions in the scooter engine are improperly timed, it could result in backfiring. Each vehicle has a unique timing adjustment method, but you can usually correct these problems fairly easily. A good way to check if this is the problem with your scooter is that a vehicle with improperly timed explosions will not idle.
What causes a leak on a scooter engine?
These types of leaks can occur when there is a fault with the air intake valve, or if it sticks. Similar problems with the gulp valve can yield the same effect. If the explosions in the scooter engine are improperly timed, it could result in backfiring.