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Old 01-17-2010, 07:36 PM   #1
Texas1100Rider
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Default 2004 Yamaha VStar 1100 (Custom)

Started the bike today and noticed it was smoking. Upon further inspection, found what looked like oil to be leaking from around some of the bolts that hold the exhaust header pipe to the engine. Bike has 24,800 miles on it. The engine's idiot light never came on.

Broken seal? Worse?

Any ideas, and estimates on repairs?

Thanks in advance!

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Old 01-18-2010, 07:01 AM   #2
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How long has it been sitting, give some history. Whats the oil level like in the window?
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Old 01-18-2010, 07:12 AM   #3
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Did it quit smoking after a minute or two? Could be a leaky valve seal.
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Old 01-18-2010, 07:25 AM   #4
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My Shovelhead broke exhaust mainfold bolts from time to time. If there's enough of a stub to back the remaining bolt out, it's no big deal. If there's no stub, you can start by drilling and using a spiral fluted screw extractor. You can get a kit with extractors and drill bits at your local parts store. Worst case is you'll have to drill, tap, and put in a Heli-Coil. How hard any of the above is depends entirely on the access you have to the bolt location. If there's a clear shot, you can do the work with the head in place. If not, you'll have to pull the head and do it on the bench.

One thing you can be sure of, if you leave the exhaust leaking for long, you will burn your exhaust valve. Then you will be pulling your head and your hair.
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Old 01-18-2010, 01:13 PM   #5
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Broken stud? If it's broken-off flush, use a TIG welder to build-up a "knot" of material on the stud - enough to get a vise-grip on it. As soon as it stops glowing, grab it with the pliers and twist it out. If it breaks off - do it again. Unless you have someone that's a piss-poor Welder, I guarantee it will come out; especially in aluminium.

Works about 10,000% better than any EZ-Out could dream of.
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Old 01-18-2010, 04:40 PM   #6
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Quote:
Originally Posted by The_AirHawk View Post
Broken stud? If it's broken-off flush, use a TIG welder to build-up a "knot" of material on the stud -

Works about 10,000% better than any EZ-Out could dream of.
Well yeah, if you happen to have a TIG welder sitting around. The rest of us use easy-outs or tap and drill.
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Old 01-18-2010, 05:29 PM   #7
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I am much better with a drill and any form of easy out. Question what makes you think its a broken exhaust stud?
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Old 01-18-2010, 05:52 PM   #8
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Ummmm. He never said anything about a broken bolt or stud.
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Old 01-18-2010, 06:02 PM   #9
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Bad valve guide seal. Nothing to worry about, the smoke goes away after a few blocks, right?

That or a bad case of aluminum termites.
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Old 01-18-2010, 06:11 PM   #10
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Quote:
Originally Posted by seruzawa View Post
Ummmm. He never said anything about a broken bolt or stud.
It seems like the original post was edited. I coulda sworn he specifically said broken exhaust studs before.
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