Check thermostat , check head gasket !
SOURCE: petrol flows out the overflow
It could be the float, and or needle valve are stuck, causung the carb to flood continusily.
Pop the float bowl off and see what state things are in.
Hope this is of some help.
Ed
SOURCE: 2006 v star 1100. 1500 miles. this bike had new
The excess fuel is caused by the float levels being out of adjustment. Fix the floats and the dead spot may disappear. If not, pull the slides and then move the jet needle clip down one notch. With due respect, I would put the bike carbs back to stock. :)
SOURCE: took coil packs off my zr 750 put them back now misfiring
Chances are the sparkplug wires are not in the correct places. This diagram should help.
SOURCE: honda big red 250 how to put back together
Go to the site below where you can see a parts diagram for your specific ATV. Being able to see the parts in secquence should help you to reassemble the motor. Get a new friend. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part and/or the notation "Not Available" is in the description, the part is not in stock. www.babbittsonline.com/pages/parts/viewbybrandand/parts.aspx
SOURCE: MY 2006 yz250f is overheating too i think... i had
It's possible your head gasket needs to be replaced. It sounds like combustion pressure is being introduced into the cooling system to me and the head gasket would be the logical place for this to occur.
The thermostat on most internal combustion
engines controls the flow of coolant to the radiator and this is fed into the
top tank of the radiator.
The bottom hose is normally at the inlet to the
coolant pump.
Vehicles with AC will have two radiators, and even
some, a third for transmission or oil cooling but the largest of them will be
the one handling engine cooling.
Locate the topmost hose of the radiator and
simply follow it back toward the engine and it is normally connected to a
dome-like fitting, under which you will find the thermostat.
If you are experiencing overheating though, it
may not be a failed thermostat; this can be caused by a radiator blocked with
debris, an internally collapsed hose and worst case, a failing head-gasket. The
latter can fail in several places and overheating is often caused by the
failure of it between coolant channels and one or more of the cylinders. This
allows passage of hot combustion gases directly into the coolant flow.
Check
the following: the overflow bottle for traces of oil contamination and possible
odor of exhaust fumes, the oil dipstick for a milky deposit and when the engine
is running, the overflow bottle for bubbles.
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