07 carb fuel leak? - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
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post #1 of 26 (permalink) Old 04-05-2012, 07:50 AM Thread Starter
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07 carb fuel leak?

Hey guys, need some feedback. Have a 07 RoadStar w/carb when, 3-5 minutes after hot shut down, the carb pisses fuel out the bottom, back of the air filter housing, at the drip hole opening. Gas then runs along the back of the rear push rod base, along the engine case, then onto the ground, leaving a silver dollar size wet spot on the ground. This happens a lot!

I've been back to the Yamaha dealer 3 times about this and they have changed the needle assy. for the float and cleaned out the carb. The problem continues. They are now telling me that this is "normal" for hot engines having been shut down because the fuel boils in the carb and expands, burping fuel out as I have described.

Are they giving me a line of crap or are others having this same issue or have heard of this problem? Thanks for any input received.

Buck
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post #2 of 26 (permalink) Old 04-10-2012, 12:25 PM
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I had the same problem with my 05. Its currently at the stealership getting the carb rebuilt.......Under warrenty
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post #3 of 26 (permalink) Old 04-10-2012, 01:49 PM
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That is a true a statement about fuel boiling. It may or may not be your problem. I would try taking the fuel cap off after you park and see if it does it. Possibly a vent issue.It could be something simple as that. It's cheap and worth a try.Let us know.

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post #4 of 26 (permalink) Old 04-10-2012, 03:31 PM Thread Starter
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Here is another update after yet another visit to the dealership about this. I am told that the vent to the tank is open and clear. I am also told that Yamaha does not put a carb, float bowl overfill tube on these carbs due to EPA regs that say they can't dump raw gas on the ground. Yet, if the float bowl overfills, the gas will come out the carb throat and drip into the airbox...and...you guessed it...the gas winds up on the ground again.

Anyway, my dealership has thrown their hands up in the air on this and is deferring me to the regional rep. I will be having a meeting with him when he makes his next stop at the dealership in a week or two. If nothing else, their concern has to be the fuel winding up on the ground which is a no, no. I'll keep you posted as to what...or what not, is the next thing Yamaha is going to do to try and correct this problem. That is, if my bike don't burn up first!

Thanks all.
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post #5 of 26 (permalink) Old 04-10-2012, 04:04 PM
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If you need any help backing you let me know. I dont know if im still going to have the problem when I get my bike back, but having the problem to begin with is absoutely unacceptable. Keep us posted if they find a fix. I dont want to look like Ghost Rider going down the road.
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post #6 of 26 (permalink) Old 04-10-2012, 06:25 PM Thread Starter
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I will certainly keep information coming on this. Yeah, it is a little unsettling knowing that there is raw fuel running out onto an extremely hot engine! There is a small cavity behind the rear push rod base where the fuel pools up and lays there until it evaporates with the heat. I have come to leaving a window open in the garage cause the fuel stink is so bad.

This is the 4th Yamaha I've owned with this basic engine, and none of my other bikes had this issue. I've had a 99, a 2004, a 2008 (injected) and now this 2007. This is the only one with this problem.
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post #7 of 26 (permalink) Old 04-10-2012, 09:14 PM
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The dealership did tell me today they found trash in the bowl and down in the jets, so holpeully that will fix it.
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post #8 of 26 (permalink) Old 04-11-2012, 06:51 AM Thread Starter
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Keep me posted. I hope that does the trick. Thanks
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post #9 of 26 (permalink) Old 04-15-2012, 01:51 PM
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Got my bike back yesterday. Rode about 60 miles and had no problems.

2005 Roadstar 1700
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post #10 of 26 (permalink) Old 04-18-2012, 02:16 PM Thread Starter
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Okay!!! Just got a call from my Yamaha dealership and the news Directly from Yamaha is; Yamaha is definitely aware of this gas leaking problem among carbureted Road Stars. I do not know how extensive this problem is however. They have been working on a "fix", but nothing conclusive yet. I am to be notified as soon as a solution has been devised so that my bike can be scheduled for the repair. How long will this be? I don't know...but I am told it is a top priority at Yamaha. Once this plays out I am sure there is going to be a TSB released.

Will post again when new information becomes available.
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