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sawdustar
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« on: November 21, 2013, 01:54:52 PM » |
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Well, I've been through many repairs on this bike, new parts, lubes, filters, and more. I'm going to be replacing the front fork seals before too long. I already have those in my toolbox for the repair day.
No matter what, I keep smelling gas fairly strong with the bike sitting....even with the petcock turned off. My questions are this:
Is it normal for this bike?
What do I need to be checking if it's not normal?
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Thank You,
Dennis
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Pete
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« Reply #1 on: November 21, 2013, 02:15:20 PM » |
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Assuming no apparent gas residue any where, try:
Gas cap seal or gas cap key hole.
Tape the key hole and test it.
As for the gas cap, perhaps you can tape it also.
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sawdustar
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« Reply #2 on: November 21, 2013, 02:26:49 PM » |
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Assuming no apparent gas residue any where, try:
Gas cap seal or gas cap key hole.
Tape the key hole and test it.
As for the gas cap, perhaps you can tape it also.
OK...will check that. |
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Thank You,
Dennis
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Moonshot_1
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« Reply #3 on: November 21, 2013, 08:31:36 PM » |
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A strong gas smell is never "normal".
I would inspect the petcock for leakage out of the weep hole. This would indicate a bad diaphragm. Check it while it is idling, check it when you shut the bike down, check it as it sits.
If this is the problem it would result in a very strong gas odor and a rebuild kit or a petcock replacement would be warranted.
Gas cap problem is possible. A simple inspection should reveal any problem.
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Mike Luken
Cherokee, Ia.
Former Iowa Patriot Guard Ride Captain
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Gunner
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« Reply #4 on: November 22, 2013, 05:29:04 AM » |
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I had a strong gas smell when I bought my IS this year. It turned out to be the rubber seal on the gas cap. I lubed that seal up with Vaseline 2x. After the first application the smell came back. I did a second application of Vaseline and the gas smell has not returned.
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Pete
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« Reply #5 on: November 22, 2013, 06:44:02 AM » |
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I had a strong gas smell when I bought my IS this year. It turned out to be the rubber seal on the gas cap. I lubed that seal up with Vaseline 2x. After the first application the smell came back. I did a second application of Vaseline and the gas smell has not returned.
Also you can soak the seal in silicone. The silicone swells the seal. |
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Jess from VA
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« Reply #6 on: November 22, 2013, 06:46:47 AM » |
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What I have read is guys cutting a new thin rubber seal and just dropping it on top of the old seal.
I am betting it is your gas cap seal.
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Ricky-D
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« Reply #7 on: November 22, 2013, 08:47:30 AM » |
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Vaseline is not recommended for rubber.
Anything that swells rubber is not good for rubber either.
Dielectric grease is an acceptable lubricant for rubber.
This is only if you want the rubber part to last.
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2000_Valkyrie_Interstate
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PAVALKER
Member
Posts: 4435
Retired Navy 22YOS, 2014 Valkyrie , VRCC# 27213
Pittsburgh, Pa
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« Reply #8 on: November 22, 2013, 10:44:07 AM » |
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Petroleum products might not be recommended for certain rubber products, but gasoline is a petroleum product after-all and the alcohol/ethanol in the gas might just be drying the rubber out. A few years ago I experienced the same thing and dabbed some synthetic motor oil (WM stuff which I also use to lube my guns) on my finger and rubbed it around the gasket and sealing surface and it stopped. Again just a week or so ago I had to do the same thing.... so it lasted a few years at least I guess.
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John  |
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Grandpot
Member
Posts: 630
Rolling Thunder South Carolina Chapter 1
Fort Mill, South Carolina
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« Reply #9 on: November 22, 2013, 12:25:54 PM » |
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Before you do a lot of work on your gas cap, check out this link. I've been running like this for almost a year and have eliminated raw gas smells. http://www.valkyrieforum.com/bbs/index.php/topic,57951.msg554952.html#msg554952 |
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 Experience is recognizing the same mistake every time you make it. |
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Gunner
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« Reply #10 on: November 22, 2013, 03:24:34 PM » |
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While Vasoline is not recommended for rubber, I see no reason not to use it on a seal that is already shot if it works to restore that seal's ability to seal (in my case anyway).
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Brian
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« Reply #11 on: November 23, 2013, 05:03:42 AM » |
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I had this same issue a while back just before the gas started dripping on the engine block. It was the O-rings on the fuel supply tubes between the carbs. I had posted the pictures before of the gunk I had at these locations. A few folks here may not agree with this but a few tanks of gas with Marvel Mystery Oil mixed in stopped the leaks till I could get the time and all parts to rebuild all the carbs. Small gas leaks can be hard to find between the carbs unless you have a build up of road dust and it is wet looking. In my case the gas started to drip off the bottom of # 6 carb. This the second time I had to replace the fuel rail O-rings because of this. We now have two gas stations here that are selling 100% gas. I try to buy it 100% of the time now. FYI, the gas enzymes Startron and others did not prevent the effect of the ethanol. I bought all my rebuild items from Redeye this time.
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