Whilst most starting problems are due to ignition problems this one seems to be a weak mixture.
It will not fire on any cylinder at all when the fault is present. Its as if there is no spark or fuel!
It only happens with the atmosphere is very damp and the engine is cold but disappears an hour or two after the weather dries up. Everything under the hood is dry. I have also wiped the inside of the cap and the insulators and leads but that makes no difference.
Its as if a sensor is giving a too weak mixture but only when the atmosphere is very damp.
When the weather dries and it fires up, the engine gives the symptoms of a weak mixture for a minute of two until it warms up. ( That is it runs at low throttle settings but fails on high throttle ).
Tony
It will not fire on any cylinder at all when the fault is present. Its as if there is no spark or fuel!
It only happens with the atmosphere is very damp and the engine is cold but disappears an hour or two after the weather dries up. Everything under the hood is dry. I have also wiped the inside of the cap and the insulators and leads but that makes no difference.
Its as if a sensor is giving a too weak mixture but only when the atmosphere is very damp.
When the weather dries and it fires up, the engine gives the symptoms of a weak mixture for a minute of two until it warms up. ( That is it runs at low throttle settings but fails on high throttle ).
Tony