I have a doozie of an issue... Our 1995 Ram B2500 van (5.2) runs fine for about 5-10 miles or so then acts like it is starving for fuel. It gets a clatter in the cylinders and a thumping sound like its out of gas (we know better, right?). Turning the key 3 times gives only code 55 meaning "All's well". There is no inline fuel filter, air filter is new and no obstructions and no place to hook up the code reader in 95. Where should we start? Plugs & wires or straight to dropping the tank? Thanks in advance.