MY 49 CC SCOOTER WONT GO OVER 10 MPH IT BOGS DOWN BACK TO IDLE

SOURCE: poor idle and bogs down when more throttle is given

coil pack

Posted on Mar 23, 2009

SOURCE: car bogs with full throttle

Its the Fuel Filter...mine did the same thing :)

Posted on Apr 26, 2009

SOURCE: no power

Keep changing parts until you find the solution! No, just kidding. Many will do this if they don't understand how an engine works. It sounds like it may be a hung choke. Engines need extra fuel when cold, and die when warm if they are still getting that extra fuel. Also, low oil level will give the same indication. There are many variables.

Posted on Dec 31, 2009

SOURCE: my klf 300 intermitently bogs down like full choke

GRANTY

Posted on Jan 02, 2010

Douglas Hansen

• 2050 Answers

SOURCE: weedeater featherlite 25cc. runs fine for 10 mins,

I just fixed one of these. Starts, but won't throttle up, sounds labored.
I checked compression, exhaust for carbon build up, spark, and even the carburator for bad gummed up gas. All were fine.
What I did to fix it was...
You need to remove the high and low speed adjustment screws on the Zama carb. They are blanks, and have no slot for a screw driver. I used a roll pin that the inside diameter fit snug on the outer diameter of the ajustment screw head, and turned it with a pair of needle nose pliers. I remove them (One at a time) and cut a slot in the head with a hacksaw, to allow for future adjustment. Back them both out one full turn from seated, and then tweek to get it to run. The low speed is for idle (Out to richen), and the high speed is for wide open throttle. It's closest to the air filter.

Posted on May 05, 2010