Mazda is once again recalling some of their cars because of those nasty yellow-sac spiders infesting the fuel lines, according to WTVR CBS6 News on Saturday. Approximately 42,000 Mazda6 sedans from their 2010-2012 production lines equipped with 2.5 liter engines are affected.
The yellow-sac spider belongs to the genus Cheiracanthium and are members of the spider family Clubionidae (sac spiders). They are quite small, usually around 1/4 to 3/8 inches in size, and are capable of causing a painful bite that develops into a necrotic lesion. Their bite is more common than the bite of a recluse spider, and they are sometimes mistaken for them.
The spiders are apparently drawn to the smell of the hydrocarbons in gasoline, and build their nests by weaving a net in the vent hose, and this could cause a crack in the fuel tank. An evaporative, charcoal-filled cleans the air comiing out of the fuel tank. This cannister has a vent-line, and this is where the spiders build their nest.
Blockage of this line prevents air getting back into the fuel tank, causing negative pressure to build up in the tank. This could result in a crack in the fuel tank and even a fire. In 2011, there were 20 cases of spider infestation in the Mazda6, all with 4-cylinder engines, not any V6's. No fires were reported either.
In 2011, a spring was installed to prevent spiders from entering the line, and any damage caused by the spiders was repaired. This year, the auto-maker is offering a free up-date to make sure there is no buildup of pressure in the fuel tank. There have been no injuries or fires associated with this latest recall.