manual choke vs enrichment

[KRS]

I have a motorcycle equipped with a manual choke. I was reading something the other day that recommends "not running the engine with the choke engaged as engine wear can result".<br /><br />Let me know if I am wrong here.... running an engine "lean" is reducing the fuel in the mixture, resulting in a hotter engine and possible damage.<br /><br />The opposite is choking an engine, or in effect, reducing the air in the mixture (making a "rich" mixture), so how would that hurt the engine?<br /><br />Thanks for the help, this one is puzzling me...

 

[ZmOz]

Re: manual choke vs enrichment

The extra fuel washes the oil off of the cylinder walls.

 

[Boomyal]

Re: manual choke vs enrichment

It's a real damned if you do and damned if you don't. Cold engines need a richer mixture to get started because the fuel burns inefficiently when the combustion chamber temperatures are still cool.<br /><br />The downside is that alot of that rich mixture goes unburned and just washes down the cylinder wall.<br /><br />The best solution is fuel injection. It is able to richen the mixture with precision and lean it out rapidly as the temperatures begin to rise.<br /><br />Use your choke, just don't put a load on the engine until you are able to ease the choke off.

 

[KRS]

Re: manual choke vs enrichment

That makes sense, I understand, thank you guys.

 

[magster65]

Re: manual choke vs enrichment

Originally posted by Boomyal:<br /> <br />The best solution is fuel injection. It is able to richen the mixture with precision and lean it out rapidly as the temperatures begin to rise.<br /><br />

Exactly, that precise fuel metering is main reason an efi motor will last so much longer than a carb'd one.

 

[KRS]

Re: manual choke vs enrichment

hmmmmmm, need to make everything two-stroke....