I'm going to have to take the other side. While it's possible it could be a coil you already said you have crud in the filter coming from your tank. I'd be really surprised if it's anything but an intermittently plugged fuel line.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.