Well MOST shops around here check your car out for free and will let you know the damage! If I had them find whats wrong for free then I could fix it for way cheaper than what they charge. I understand what you mean now but that link just looked really complex but I will give your idea a shot first. I will go buy the pressure tester this weekend and try finding the qwirk myself. Once again bud.... Thanx Alot for replying