need help with Honda 80
- Thread starter DOC BOLM
- Start date
Goat Herder
Gutter Rider
Check fuel and spark. Just a teaspoon if gas in the spark plug hole should make it fire.
GearNut
Active Member
Yes, up to a point.
If the fuel tank will not allow internal pressure to escape out of a vent and the fuel valve was in the on position the pressure could overpower the float needle valve and cause the carburetor to overfill and flood.
How you got enough to fill up your engine is a bit baffling though. I could see maby 1/4 cup of fuel at the most being forced into a carb with the aforementioned problem.
Considering the volume of fuel you are talking about, that does sound like a dirty or stuck float valve or fuel logged float.
Most fuel tanks these days are vented into a charcoal canister. Any excess pressure is vented to it and the fumes are trapped by the charcoal.
If the fuel tank will not allow internal pressure to escape out of a vent and the fuel valve was in the on position the pressure could overpower the float needle valve and cause the carburetor to overfill and flood.
How you got enough to fill up your engine is a bit baffling though. I could see maby 1/4 cup of fuel at the most being forced into a carb with the aforementioned problem.
Considering the volume of fuel you are talking about, that does sound like a dirty or stuck float valve or fuel logged float.
Most fuel tanks these days are vented into a charcoal canister. Any excess pressure is vented to it and the fumes are trapped by the charcoal.
GearNut
Active Member
Then the fuel cap might only have a one way vent to let air in as the fuel goes out.
Honda was funny like that years ago. My '80 CT70 has a free venting cap, though it has the ability to turn the vent on or off depending on if you are transporting in on the back of an RV or riding it.
Honda was funny like that years ago. My '80 CT70 has a free venting cap, though it has the ability to turn the vent on or off depending on if you are transporting in on the back of an RV or riding it.
D.J.
Member
I know that this may sound "out there" but check your valve clearances . When these clearances disappear with wear the valves no longer close properly and can cause fuel to be pushed or sucked in to all sorts of places . I also once had the choke flap come loose from its arm and fall in to the full on position without looking like it was on . .... D.J.
Bikeguy Joe
Godfather of Motorized Bicycles
The float stuck.