My bike doesn't need choke to start!

HD · World Chat Champion Joined: 16 Dec 2009 Karma :

Well, obviously its nice not to use choke to start as mine is tucked right away and it is more of a pain but it has got me thinking.

I have read a few places where it says if it starts without choke it is running too rich and I need to change the jetting (a few said pilot jet).

The carb was messed before I got the bike now the top end has totally been rebuilt with new clutch, carb jets, exhaust, air filter (standard before you ask).

We put the standard jets back in but raised the main jet to the requirements of the people who sold me my exhaust (PJ Motorcycle Engineers).

Also it started without choke when I bought it too.

Help Confused

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Rusty '02 Vito Camper + CBR600F3

Wafer_Thin_Ham · Super Spammer Joined: 18 Nov 2005 Karma :

Do you have any other problems with it at all?

Not all bikes need choke to start all of the time. It kind of varies.

If you have no other issues I really wouldn't worry about it.
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HD · World Chat Champion Joined: 16 Dec 2009 Karma :

https://www.bikechatforums.com/viewtopic.php?t=205005&highlight=
This.

But, as I have mentioned lots has been done since them. Just need to re-do the clucth this morning cos I dont think the spline is sitting in properly and then can ride it a bit. Obviously have to run it in for 200 miles but hopefully should be okay. Not actually legal to ride it for four weeks yet.

Thanks Thumbs Up

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Rusty '02 Vito Camper + CBR600F3

Walloper · Super Spammer Joined: 24 Feb 2005 Karma :

It is normal for an engine to require some fuel enrichment for 'cold' starting.
But... I regularly start the CG125 without choke only cracking the throttle open.

If I don't keep it going though it dies on idle and will always require choke to re-start then. Smile

Maybe your carb/s drip/s a wee bit into the manifold when you shut off or something.

I would have the carbs set-up properly by a carb person. One who knows carburettors.

But if it doesn't worry you then why worry?

You can get an indication of mixture issues by looking at the plugs if you can be arsed.

https://www.classic-car-magazine.co.uk/articles/spark_plug_colour_guide_chart.html
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ZRX61 · Victor Meldrew Joined: 05 Nov 2003 Karma :

Most bikes are so cold blooded that one of the first things to do is go up one size on the pilot jet so you don't have to sit there with your thumb up your arse for 5 minutes waiting for it to warm up.. On mine I use the choke to fire it up when cold & as soon as it catches I can turn the choke off...
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