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Re:2006 Road Star (27 miles) can't get it to start.. (1 viewing) (1) Guest
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TOPIC: Re:2006 Road Star (27 miles) can't get it to start..
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Road_Hawg (User)
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Re:2006 Road Star (27 miles) can't get it to start.. 2 Years, 9 Months ago  
Aussie B wrote:
If the lifter/s have drained out, it may take a while (10 minutes of running) to get them fully pumped up again, also it could be a sticking valve. If valve is sticking open, piston may be hitting it. I would do the carby first, then pull the plugs and make sure you have plenty of compression.

The piston typically will not go up far enough in a given engine to hit an open valve because the valves are in the dome of the head which is above the top of the cylinder sleeve. The valves do not open far enough to go below the head into the cylinder. If it is hitting a valve, the valve stem keepers have either broken or were not installed correctly and have come out of the spring cap letting the valve drop down into the cylinder far enough for the piston to hammer it on the upstroke. I can't imagine this happening on a bike with 27 miles, but when he said he hears a knocking sound on the upstroke, it sure does sound like a dropped valve.
 
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Last Edit: 2009/04/26 15:15 By Road_Hawg.
 

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2006 Road Star (27 miles) can't get it to start..
TudorRoadStar 2009/04/22 19:17
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Big Bear 2009/04/22 19:19
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TudorRoadStar 2009/04/24 20:43
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Road_Hawg 2009/04/24 20:48
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huskerbob 2009/04/26 07:51
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Musky 2009/04/29 15:50
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Akela 2009/04/25 09:47
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Darn 2009/04/24 21:45
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TOPNOTCH 2009/04/25 03:01
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dave j 2009/04/25 07:22
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Rayjay 2009/04/25 16:41
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Aussie B 2009/04/25 22:03
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Road_Hawg 2009/04/26 07:24
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tatinguy 2009/04/29 18:19
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Big Bear 2009/04/30 00:33
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robertjfoster 2009/04/30 07:06
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Road_Hawg 2009/05/09 09:40
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TudorRoadStar 2009/05/04 18:19
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Big Bear 2009/05/04 18:21
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dave j 2009/05/09 17:34
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