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Roadkill1962 (User)

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THE_CURMUDGEON

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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

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Topics

Author

Date

Gas Leak When Hot

Hat

2009/06/27 10:27

Re:Gas Leak When Hot

Flashback

2009/06/27 11:35

Re:Gas Leak When Hot

Roadkill1962

2009/06/27 14:41

Re:Gas Leak When Hot

Hat

2009/06/27 20:35

Re:Gas Leak When Hot

Roadkill1962

2009/06/27 20:49

Re:Gas Leak When Hot

Curt

2009/06/27 21:08

Re:Gas Leak When Hot

Erbman02

2009/06/28 05:28

Re:Gas Leak When Hot

MS1700

2009/06/28 06:45

Re:Gas Leak When Hot

Trenchdog

2009/08/24 19:12

Re:Gas Leak When Hot

Silverado

2009/08/24 19:58

Re:Gas Leak When Hot

MS1700

2009/08/24 20:20

Re:Gas Leak When Hot

Tusler

2009/08/25 00:27

Re:Gas Leak When Hot

bullfrogsierra

2009/08/25 05:56

Re:Gas Leak When Hot

Erbman02

2009/08/25 08:24

Re:Gas Leak When Hot

Crusierbob

2009/08/25 11:00

Re:Gas Leak When Hot

Erbman02

2009/08/25 11:10

Re:Gas Leak When Hot

MS1700

2009/08/25 11:44

Re:Gas Leak When Hot

Crusierbob

2009/08/25 13:08

Re:Gas Leak When Hot

Erbman02

2009/08/25 15:01

Re:Gas Leak When Hot

dave j

2009/08/25 19:00

Re:Gas Leak When Hot

Erbman02

2009/08/26 06:56

Re:Gas Leak When Hot

dave j

2009/08/26 08:15

Re:Gas Leak When Hot

dave j

2009/08/26 19:48

Re:Gas Leak When Hot

Erbman02

2009/08/27 10:44

Re:Gas Leak When Hot

dave j

2009/08/27 13:50

Re:Gas Leak When Hot

Erbman02

2009/08/27 14:44

Re:Gas Leak When Hot

dave j

2009/08/27 17:55

Re:Gas Leak When Hot

Flashback

2009/08/27 20:33

Re:Gas Leak When Hot

Crusierbob

2009/09/04 16:33

Re:Gas Leak When Hot

hrdbrgn

2009/09/04 20:19

Re:Gas Leak When Hot

Makcap

2009/09/04 20:31

Re:Gas Leak When Hot

MS1700

2009/09/04 21:44

Re:Gas Leak When Hot

Crusierbob

2009/09/28 11:52

Re:Gas Leak When Hot

deadlion

2009/09/28 13:06

Re:Gas Leak When Hot

Crusierbob

2009/09/28 14:34

Re:Gas Leak When Hot

Erbman02

2009/09/28 15:35

Re:Gas Leak When Hot

Crusierbob

2009/09/28 17:14

Re:Gas Leak When Hot

Erbman02

2009/09/28 18:12

Re:Gas Leak When Hot

vwtech0

2009/09/28 19:06

Re:Gas Leak When Hot

bullfrogsierra

2009/09/28 14:40

Re:Gas Leak When Hot

bullfrogsierra

2009/09/28 14:54

Re:Gas Leak When Hot

bofish

2009/09/29 08:24

Re:Gas Leak When Hot

Crusierbob

2009/09/29 12:38

Re:Gas Leak When Hot

Erbman02

2009/09/29 16:13

Re:Gas Leak When Hot

Crusierbob

2009/09/30 17:28

Re:Gas Leak When Hot

Crusierbob

2009/11/03 10:52

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