2004 Honda CRF 450 R won't run with the choke off I have warmed it up plenty. It idles normally with the choke on but shuts down as soon as the choke is shut off.

Need a faster answer?
Hi, Anonymous and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Vacuum line from the petcock to intake manifold cracked.
5. Float needle and seat sticking.
6. Float level too low.
7. Carburetor bowl vent line clogged/blocked/pinched.
8. Idle adjusting screw set too low.
9. Air/fuel mixture screw set too lean.
10. Idle port, transfer ports, slow air jet clogged.
11. Slow fuel jet clogged.
12. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on the blue links below. Good luck and have a wonderful day.
2006 crf450r won run without choke on
Honda CRF450X 2005 Service Manual
Honda CRF450R Owner Manual
Was this answer helpful?
Thank you for your feedback!