Fuel Starvation Problem

A weak spark could cause this as when the throttle is opened the cylinder pressure rises sharply, the atmosphere inside becomes very dense and a much higher voltage is needed to make a spark.

If it is fuel starvation then partially applying the cold start, choke or strangler should alleviate the problem somewhat; signalling you missed something when checking the fuel system.

might be a problem with the electric choke sitting on the carburetor.
-or you should adjust the air/fuel ratio & idle speed settings on the carb (by a Vespa-shop)

I have a kawasaki kx450 2007. I was out riding a

i think it is the CDI-box (at the top end of engine) not working.
check the connectors (pull the rubber cover)
- or better get a new one

THE SHAVINGS ARE FROM THE FUEL PUMP ROTOR, REPLACE THE FUEL PUMP INSIDE THE GAS TANK.

Hello eireannachcr:

>>Check All the Fuel Connections and Make Sure they are Tight.
>>From Your Description it Sounds like a Loose Fitting or a Bad Compression Washer.
>>A Bad Compression Washer or Loose Fitting will Allow the Fuel to Drain Backwards (sometimes it takes setting for a few days for the Fuel to Bleed Back) when the Engine is Not Running. Once the Engine is Started, it Runs Correctly Until the Air Pocket in the Fuel Gets to the Injector Pump and then the Engine Stalls. The Fuel Behind the Pocket Keeps the Pump and Lines Primed so the Engine will Restart without Bleeding Any Air from the Fuel System.
>>You can View a Breakdown/IPL of the Engine and Mower at this Site Addy, http://jdpc.deere.com/jdpc/servlet/com.deere.u90490.partscatalog.view.servlets.HomePageServlet_Alt and Enter the Model Numbers and Click Find. Then Select your Model from the Search Results Area. Then Select the Sectional File. Then Select the Section of the Mower you Wish to View Online. *You can Drag the View Windows for Better Viewing.*
Please, Do Not Hesitate, If I Missed Something or you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck

Respectfully

jbridger (John)

It's quite easy to get the tank out.
Remove the 4 bolts (2 front and 3 back) on top of the tank under the seat. You can lift the tank out.
replacing the fuel tap is a bit harder as you need to loosen a nut inside the tank, then pull the tap out.

did you put back the choke (under fuel switch)
- and better rev once high in neutral after succesful start until engine gets warm