Rory, DMC Joe when he gets back may have the exact fix, but I have replaced 2 gasoline accumulators on 3 of my cars. It keeps a constant pressure on the gas system. Be carefull if you change it out, not to twist the top gas line. Be patient an take your time. very close quartes for working and it can be a knucle buster .Be sure to get new hoses b/4 you start the job. John vin 11004