Water in fuel supply at Atlanta

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I read one article that said that Ryan Newman's car also had water in the fuel along with Kurt Busch's.
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HAMPTON, Georgia (AP) - Water got into the fuel supply of more than two cars during the weekend NASCAR race at Atlanta Motor Speedway, apparently leading to a crash that took out several top contenders near the end.

Denny Hamlin was leading the Pep Boys Auto 500 with three laps to go on Sunday when his car stalled while taking the green flag after a caution period. Martin Truex, who led the most laps, smashed into the back of Hamlin's car and finished 31st. Hamlin slipped to 24th.

"There are multiple teams that are showing positive for some level of water contamination level in their fuel," John Darby, NASCAR's Nextel Cup director, said on Monday. "It's more than two and less than 43 at the moment."

Darby dismissed sabotage as a possible explanation, saying too many teams were affected for anyone to have been singled out.

He said extensive testing done by Sunoco, NASCAR's official fuel supplier, showed no signs of problems in the underground storage tanks at the suburban Atlanta speedway. The problem likely occurred in the piping that runs from the tanks to the pumps, or in the pumps themselves.

"It's a brownish-colored water," Darby said. "If it was just water, it would be more clear. That should help us understand if it came from a failed pipe or a failed pump or some other source that allowed it to enter the fuel."

In a "huge majority" of cars that tested positive for water in their fuel systems, the amount was so small that it didn't affect performance. For example, winner Jimmie Johnson had some water in his carburetor during the post-race inspection.

But the amount of water was enough to affect at least two drivers: Hamlin and Dave Blaney, who had performance issues all day and finished 38th, 66 laps behind Johnson.