Had the exact same thing happen to my SL. I replaced the fuel filter and that fixed the problem. Now if it was just the clamps, I don't know. I did use the same clamps on the replacement, so I kind of doubt it.

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95 SL500 Smoke Silver, Parchment 64K
07 E350 4matic Station Wagon White 34K
02 E320 4Matic Silver/grey 80K
05 F150 Silver 44K