JonathanT
Not normal for Norfolk
- Messages
- 1,332
- Location
- Wymondham Norfolk
Hello everyone!
not been on here for a while and now here I am with a problem ! (Typical)
Out at the weekend in Womble ( GTL)
Hot day and Womble refused to start when already hot.
Now I have had this problem before but it’s always gone away so I have not bothered
However this time was more problematic and I was in a ‘breakdown’ state for an hour or so.
Closer examination of the carb saw fuel dripping on the manifold .
Took the air box off and looked down into the throat of the Zenith 28if
I could see fuel pouring in and onto the butterfly- quite alarming and all this with the engine and ignition off.
I’m thinking how could this be ? Has the needle valve got stuck open ??
further investigation on the subject of Hot Starts reveals modern fuel is very prone to evaporation and boiling
And fuel lines in older cars would benefit from
1/ routing via a cooler location to the carb
2/ fitting an electric pump with an inertia shut off switch and non return valve
So could it be the fuel passing over the top of the engine and sitting in the filter is boiling on entry to the carb reservoir and causing the needle valve to jiggle and allow more fuel into the carb reservoir and then overflow into the engine
I am thinking the suggestions 1/ and 2/ are good and may take this route but welcoming any thoughts
will post pictures shortly
thanks guys !
not been on here for a while and now here I am with a problem ! (Typical)
Out at the weekend in Womble ( GTL)
Hot day and Womble refused to start when already hot.
Now I have had this problem before but it’s always gone away so I have not bothered
However this time was more problematic and I was in a ‘breakdown’ state for an hour or so.
Closer examination of the carb saw fuel dripping on the manifold .
Took the air box off and looked down into the throat of the Zenith 28if
I could see fuel pouring in and onto the butterfly- quite alarming and all this with the engine and ignition off.
I’m thinking how could this be ? Has the needle valve got stuck open ??
further investigation on the subject of Hot Starts reveals modern fuel is very prone to evaporation and boiling
And fuel lines in older cars would benefit from
1/ routing via a cooler location to the carb
2/ fitting an electric pump with an inertia shut off switch and non return valve
So could it be the fuel passing over the top of the engine and sitting in the filter is boiling on entry to the carb reservoir and causing the needle valve to jiggle and allow more fuel into the carb reservoir and then overflow into the engine
I am thinking the suggestions 1/ and 2/ are good and may take this route but welcoming any thoughts
will post pictures shortly
thanks guys !