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I am having an issue with my fuel delivery. When the engine gets hot and I am sitting at a redlight idling, the engine acts like it wants to cut off. I have noticed at these times there is virtually no fuel in the fuel filter. Driving down the road, no problems.
 

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Your fuel pump diaphragm could be on the way out. I have friends who have had their old rubber parts in their fuel system destroyed by the ethanol in the gas. I myself experienced a fuel supply hose that literally started to break down from the inside out.

Once pinholes develop in the pump diaphragm, its efficiency drops off rather quickly.
 
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