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2003 Road Star Silverado Help

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  • 2003 Road Star Silverado Help

    Hi, I have a 2003 Road Star Silverado, It is all stock except for vance and hines long shot pipes. I recently bought it with 9,600 miles on it, third owner I believe. It ran and rode well but was a little lean. I found the manifold was leaking so I bought a new yamaha manifold and the orings to go along with it. I faced the manifold as recommended on the forum and then installed it just using a light grease on the rings. While the carb was off I took it apart and cleaned it. It wasn't too bad. I replaced the float bowl gasket and put it all together. ( I did notice while cleaning that the seat gasket was hard and had a couple cracks/nicks in it. I didn't have a new one so I used it as is) . The bike fired right up and was on choke for a minute or two and then idled fine without the choke. I let it warm up for about 10 minutes then I shut it off. I went to restart it about ten minutes later and it wouldn't start. They key was on. I held it wide open and cranked it and then it fired for a second then died. I am assuming the seat gasket it bad or maybe the float needle. I pulled the plugs and they were wet. Besides the needle/seat issue is there anything I may be missing? Also during this whole thing I deleted the AIS and made sure the manifold hose connection was plugged. Thanks for the help, Anthony.

  • #2
    Did you tighten manifold carefully? Final torque is 105 in/lb....best to do in 20lb increments in a cris-cross pattern. If you over Tightened or did full 105 in/lb on one side at a time maybe cracked or have a leak. Prob best to pull tank carb and manifold and reinstall manifold carefully and inspect carb again while it's out.

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    • #3
      I installed it finger tight then did the criss-cross pattern up to the 120 inch pounds. Its all apart again already. I was going to order the full rebuild kit tomorrow.

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      • #4
        Did you turn off the fuel petcock and forget to turn it on?

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        • #5
          Ha ha, believe me, I thought I may have but I tried it on reg and reserve. I faced the new manifold, gently greased the O-rings, torqued properly in a crisscross order. I took my time and tried to get it right on the first time. I am by no means a motorcycle mechanic but I know my way around a toolbox. I am gonna do a full carb rebuild, check the manifold again and go from there. I checked the fuel pump and I can feet it turn on when I turn the key.

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