QuestionMike, Thanks for the reply. As a follow-up, this is not a new carb. It has been on the bike for 50k miles and this problem is just now poping up. The timing I am told is not adjustable since it is part of the ignition module. Do you have any other ideas? How does a crank position sensor act when it is going bad? Is there any way to check it without a code reader?
Thanks
Matt
-------------------------------------------
The text above is a follow-up to ...
-----Question-----
01 dyna 51k miles 42mm mukuni just rebuilt. before and after rebuild, refuses to start in cold ambient air temp. carb has been on bike since new without problems. plugs and pipes black (rich).recent work new battery new stator new starter new drive belt. problem started in spring and continues since it got cold again. starts fine when outside temp is 50+ choke out, no throttle hit starter and it starts. will not do same in cold temps.
thanks for your time. matt
-----Answer-----
SInce you stated that your plugs are black then its running to rich and needs rejetted. With black or fouled plugs a bike is hard to start. Also, check yout timing to make sure its not to advanced since that will also make it hard to start
Good luck and happy riding
Mike
AnswerIf your crank position senser was going bad the bike wouldnt run right at all times.
To check any of the sensers you would have to have a dianostic done on the bike. Its the only way to tell for sure.
When the temp is cold try giving the bike a couple shots of gas with the throttle before starting it and seeif that doesnt help.
Also, since you said the carb has been on there for that long and your plugs are black you might have a weak coil. Once the coil and plug wires start going bad it will fould your plugs and make it hard to start.
Good luck and happy riding
Mike
