W Vacuum Systems Vacuum Trouble-Shooting Vacuum trouble-shooting follows the same basic rules as does electrical trouble-shooting And, the trouble-shooting procedures take the same factors into account . . 0 probability 0 speed - simplicity 0 elimination I certainly As in all trouble-shooting the same basic stepsor shortcuts~to becomming an expert are: Verify the condition. This simply means make sure you really have a problem belore you start fixing it. Try to duplicate the malfunction beiore you proceed. Quick visual Inspection, Look torthe obvtous. ll you're havtng vacuum feed problemscheck first tor things that are readily evident. Things like a disconnected hose. Think simple. Even unusual problems can be caused by very simple malfunctions, Forinstance. low vacuum reading is qulte likely to be caused by a loose. cnrnped or slightly out hole. An intermittent problem is apt to be caused by something loosenot broken. per se. Don't assume. Once youve cured the symptom, you may still have the root oi the condition to tackle. And, remember new parts are just that~new. Don't assume they are good working parts. The vacuum section of the manual follows the same condition/step" approach as the electrical pan. Also. what to donot how to do itis stressed That is. which repairs to make, not how to make them. 44 Trouble-Shooting Tools Vacuum Gauge This tool is used to measure the amount ol vacuum in a supply line. component. reservoir, etc. The vacuum gauge is especially useful for detecting a uctuating supply or leaky hose Typical Vacuum Gauge Usmg The Vacuum Gauge Vacuum Tester This tool (Rotunda 21 -0014. or equivalent) enables you to create a specific amount oi vacuum lor test and diagnosis procedures. This enables you to check the operation of parts of vacuum circuits and Indivtdual components. The needle drops to show vacuum decrease such as when a vacuum component functions Uslng The Vacuum Tester Color Designations inkblack rred bblue wwhite ggreen yyellow ttan