front cilinderhead stay cold

[Guillaume]

Maybe sombody can help me out, friend of my has a harley davidson and told me his front cilinder head stay cold.
He have to use his choke so if anybody can jump in , I know he is not on this forum .
:2thumbs:

 

[pknowles]

Change the spark plug. Is not firing.

 

[BadDawg Bill]

Change the spark plug. Is not firing.

1+ or the spark plug wire is bad or the coil is bad or he lost compression in that cylinder.

 

[Guillaume]

Thanks guys.

 

[Th3InfamousI]

Tell him to buy a Big Dog

Or change the spark plugs, test the coil, change wires if necessary.

If it's worse buy a real bike

 

[Sven]

have to use his choke

What I understand here is that my bike runs, meaning, sparks, has compression, fuel, but it is so cold it needs the choke. If the bike runs, the choke being needed before it warms up or even starts... that's what I'm thinking.

I might be going in the wrong direction, but looks like it's cold out, the air is cold, makes poor atomization; has to have the engine head warmed up before the air can heat up, expand the fuel droplets so the burning is one after the other is a bump into, or when there is no mist but a droplet, there is a misfire; poor performance; cooler heads, etc.

The question is, when it's warmed up, does the bike run fine? Yes. Leave it alone, no problem found... Go talk to mother nature and complain to her about the science.