Gas Cap Compression with Altitude Change
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- avejoe
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Gas Cap Compression with Altitude Change
When I head down from the hills my gas tank compresses and the gas cap cuts into the fender making it really difficult to remove. To address the issue I have to loosen the cap to allow air into the tank before I leave elevation. Is this a design defect or is it just my quad (07 KK)?
Thanks!
Thanks!
Re: Gas Cap Compression with Altitude Change
this is a new one for me.....most fuel tanks are vented, but with the new fuel injected quads I think the systems are a sealed loop. I have noticed that the yam 700 griz's gergle and burble. interesting. of course I am of no help to youavejoe wrote:When I head down from the hills my gas tank compresses and the gas cap cuts into the fender making it really difficult to remove. To address the issue I have to loosen the cap to allow air into the tank before I leave elevation. Is this a design defect or is it just my quad (07 KK)?
Thanks!
DAVE
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My Polaris EFI has a breather hose. But I do notice it vents a LOT more gas than my carbed Quad.
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- GrizzlyGuy
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Your KQ should have a check valve somewhere in the fuel line. This is supposed to allow the tank to breath, while still minimizing the amount of fuel vapors that get released to the atmosphere (and prevent gas spillage if you roll over). Sounds like that is clogged or otherwise not functioning. My old Grizzly used the ole hole-in-cap technique, but the newer fuel injected quads have a check valve instead.
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- avejoe
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There is a check valve above the gas tank and below the fender. I tried to remove it to clear it out and it appears I will have to remove the rear plastic to get at it.
That is more of a pain than making sure I burp the tank a few times on the way down the hill.
If there is any other way, I am all ears.
That is more of a pain than making sure I burp the tank a few times on the way down the hill.
If there is any other way, I am all ears.
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How about getting an older-style cap that has a hole/hose for venting, and put that on while transporting to/from the mountains? Then ride with your normal cap to keep from throwing off the EFI.avejoe wrote:If there is any other way, I am all ears.
I don't know if KQ's use a cap the same size as Grizzly caps, but if they do, you could swing by a Yamaha dealer and buy a replacement cap for a 660 Grizzly. Those used the hole/hose design for venting.
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Warn 2500 Winch
More Videos: http://GrizzlyGuy.TV
Some More Videos: http://www.youtube.com/user/ATVGrizzlyGuy
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My quad: Grizzly 700, 25" Bighorns, Bash Plates,
Warn 2500 Winch
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