Question about 2004 Yamaha Road Star Midnight

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Backfiring and won;t idle

2004 yamaha motorcycle back fires and won't stay idling

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Check the gasket, etc. rubber housing between carb and engine. these will occassionally crack and cause problem you have descriped

Posted on Aug 15, 2009

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I would think that the valves need adjusted or the timing could possibly need adjusted. Check to make sure the screws are tight on the timing plate and verify timing marks on the crank and cam.

Posted on Jun 16, 2009

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If stock exhaust then check your air filter and air mixture screws.

Posted on Jun 11, 2009

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1 Answer

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1 Answer

2004 r6 starts but won't stay running what I do


Hi, Mckinneym697 and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
10. The gas cap is not venting properly or fuel tank venting system blocked.
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For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
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1 Answer

2005 Yamaha TT-R 125 LE will not idle without choke on


Hi, Kirkbb1 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.
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