Q: Lack of power at full throttle.

asked by on November 28, 2016

I have a derbi bullet 50cc scooter and when I accelerate at Full Throttle there is a Power Drop actually get more power my my trouble is halfway through also noticed a lot of smoke coming out of the engine on start-up I normally goes away after the first minute also when they take off for the first time everyday it has trouble speeding up this problem is gone after first 50 meter but I'm pretty sure it's not normal I have tried letting it run for a while before taking off

Hi there. Your scooter has a fuel flow restriction which could either be in the tank, lines, or carburetor itself. Let off the throttle and open the throttle again. If the scooter fixes its self, then the float bowl in the carburetor could have debris in it causing a restriction. I recommend removing the carburetor and cleaning it and replacing the fuel filter. If you need further assistance with your scooter having a loss of power at full throttle, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Throttle Body and fuel injector cleaning normal to do at my miles? Dealership saying I should do it.

It may be a good idea to have the throttle body and injectors cleaned at regular times but you do not have to have it done now unless you are having a problem with how the engine is running. If...

SUV experienced low acceleration and loss of power

Hello. There are a few possible problems that might explain the problems you are experiencing with your 2009 Saturn Outlook. There could be a problem with the catalytic converter in that it may be clogged. The catalytic converter is like...

wont go faster 35mph

If the Check Engine Light is on this would be helpful as the codes that would be triggered by this would generate useful information relating to the problem. Without the benefit of hooking the car up to a scanner and...

Related articles

B2106 OBD-II Trouble Code: Throttle Position Input Out of Range High
B2106 trouble code means there's a range issue with the throttle position input in a 4WD system, caused by a damaged circuit in the 4WD system.
How to Diagnose a No-Spark or Loss of Power Condition on a Modern Car
Misfires caused by a loss of power condition on a car can be tricky to diagnose, but are necessary to fix to avoid further damage and costly repairs.
How Long Does a Throttle Kicker Actuator Last?
What What happens when you turn down things in your vehicle such as the air conditioner? It slows down in a controlled manner. Just like when you decrease your speed it's not a sudden loss of power rather it is...