Not easy to troubleshoot without further info, John. And depends on what you mean by "airlocked." Describe the symptom more? What engines, filters, etc.? What have you already tried? If it's diesel, and if you mean it often stalls out... it could be something is as simple as an air leak in one of your fuel delivery hoses... But folks will probably need more info to enumerate more useful suggestions... -Chris
Well, That's easy; Including the Racor, you have a leak letting air in. Start with fresh O rings on the Racor top.
