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#206986 Hat (User) Fresh Boarder Posts: 15 Gas Leak When Hot 2 Years, 7 Months ago   I have a 2004 Roadstar. I have learned the hard way that when it is extremely hot it will leak gas out of the cylinder head after I have turned it off and try to start it again. I asked my dealer about it and he said they were aware of this problem and so was Yamaha. Apparently, according to the dealer, there is some kind of sensor between the carb and the cyclinder. Have any of you experienced this and if so what can I do to fix it ?   Logged     The administrator has disabled public write access. #207012 Flashback (Moderator) Just the facts, Ma'am.. Moderator Posts: 9186 Re:Gas Leak When Hot 2 Years, 7 Months ago   This confuses me a bit, how does the gas get into the cylinder if the motor is not running? you may have a gas leak, but I doubt it's coming from a cylinder..   Logged       The administrator has disabled public write access. #207073 Roadkill1962 (User) ΜΟΛΩΝ ΛΑΒΕ Platinum Boarder Posts: 3110 Re:Gas Leak When Hot 2 Years, 7 Months ago   Hat wrote: I have a 2004 Roadstar. I have learned the hard way that when it is extremely hot it will leak gas out of the cylinder head after I have turned it off and try to start it again. I asked my dealer about it and he said they were aware of this problem and so was Yamaha. Apparently, according to the dealer, there is some kind of sensor between the carb and the cyclinder. Have any of you experienced this and if so what can I do to fix it ? I have a 2004 and have never heard anything like this. Are you sure it's coming from the cylinder head and not just getting ON the cylinder head? Sounds more like "puking", which is quite common (unfortunately), especially in hot weather riding. As far as anyone can tell, best guesses as to the cause are heat and/or excessive fuel pump pressure. After riding and getting the bike good & hot, when you stop, the heat from the engine "boils' the gas in the carb and it spits out through the carb, air cleaner, etc. all over the place. Then it's tough to restart for a while. Does this sound like your problem? Just do a search on the forum for "carb puking" and you'll find out more than you ever wanted to know. Mine stopped it after I removed the fuel pump. RK   Logged     “To compel a man to subsidize with his taxes the propagation of ideas which he disbelieves and abhors is sinful and tyrannical.” - Thomas Jefferson   The administrator has disabled public write access. #207153 Hat (User) Fresh Boarder Posts: 15 Re:Gas Leak When Hot 2 Years, 7 Months ago   Hey Roadkill - thanks for your input - you described it perfectly. I will do a search to find out more about puking carbs. Thanks very much.   Logged     The administrator has disabled public write access. #207159 Roadkill1962 (User) ΜΟΛΩΝ ΛΑΒΕ Platinum Boarder Posts: 3110 Re:Gas Leak When Hot 2 Years, 7 Months ago   My pleasure & glad I could help--all I did is pass on what I learned from being here. But I guess that's why we're all here. RK   Logged     “To compel a man to subsidize with his taxes the propagation of ideas which he disbelieves and abhors is sinful and tyrannical.” - Thomas Jefferson   The administrator has disabled public write access. #207171 Curt (Moderator) Never to old to ride! Moderator Posts: 11733 Re:Gas Leak When Hot 2 Years, 7 Months ago   Also make sure the metal fuel line running between the jugs is away from the jugs and has the shield material all around it too.   Logged     My Site Black Ice is Shiny, Black Ice is Deadly, Ya Wanna Ride My BlackIce?   The administrator has disabled public write access. #207256 Erbman02 (User) Platinum Boarder Posts: 3382 Re:Gas Leak When Hot 2 Years, 7 Months ago   Float level too high.   Logged       The administrator has disabled public write access. #207269 MS1700 (User) Platinum Boarder Posts: 2502 Re:Gas Leak When Hot 2 Years, 7 Months ago   Lose the pump Mod and aftermarket Air cleaner. Heat is trapped between the jugs. This is the only cure I found working on it 21K miles. I tried hard. Search Puking gas.   Logged     The administrator has disabled public write access. #220462 Trenchdog (User) Fresh Boarder Posts: 1 Re:Gas Leak When Hot 2 Years, 5 Months ago   I'm new to the forum, but not to the problem. I have a 2007 1700 and for the last two years I have had to deal with this problem. The only mods to my bike are a set of Cobra pipes (no jetting, no big air kit). Also, I ride with two other Roadstars (2004 1600) and they have the same problem. I finally pined down my dealer and his answer does not sit well with me. He said that by adding the pipes I made the bike run lean and that if I rejet the carb it will run 30-40 degrees cooler. Does this sit well with this forum or is this just BS? Incidentally, I had contacted a different dealer on a previous occasion about rejetting, and the service department rep recommended against it!   Logged     The administrator has disabled public write access. #220473 Silverado (User) Senior Boarder Posts: 311 Re:Gas Leak When Hot 2 Years, 5 Months ago   Trenchdog wrote: I'm new to the forum, but not to the problem. I have a 2007 1700 and for the last two years I have had to deal with this problem. The only mods to my bike are a set of Cobra pipes (no jetting, no big air kit). Also, I ride with two other Roadstars (2004 1600) and they have the same problem. I finally pined down my dealer and his answer does not sit well with me. He said that by adding the pipes I made the bike run lean and that if I rejet the carb it will run 30-40 degrees cooler. Does this sit well with this forum or is this just BS? Incidentally, I had contacted a different dealer on a previous occasion about rejetting, and the service department rep recommended against it! I got that same explanation from a dealer here in Indy a couple weeks ago. All I have installed in the V&H Long Shots. He did his best to try to convince me I needed to bring it in and let them rejet it even with the stock air cleaner. He even went so far as to ask me if I was trying to burn it up. Silverado   Logged       The administrator has disabled public write access.

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