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Old 09-19-2010, 05:43 AM
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Bighead Bighead is offline
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Join Date: Jul 2006
Location: Woodland Park, CO
Posts: 315
Default Optima battery hissing/venting

I have a 1.5 year old Optima Red Top (34R) in my 4Runner and noticed a hissing sound coming from it after driving it home on Friday.

The 4Runner had been sitting in airport long-term parking for 5-days. I drove it home Friday and when I parked it, noticed a hissing sound coming from the engine bay. After checking it appeared to be coming from the vent nearest the positive terminal.

Is there something I should be concerned about or is this normal and I have just never noticed it before?

Thanks for the help.
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2004 Land Cruiser -- OME/Slee Suspension | F/R ARB Lockers | 285/75-16 Nitto Terra Grappler | Slee Armor front, rear, sides and belly | Dual Battery | ARB Drawers
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