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Message: [QUOTE="PSDEng, post: 636790, member: 1228"] Great, they all buzz, all of your injectors are plugged in. Did you read the entire tech article that Dave posted? "Cylinder contribution tests(CCT) & rotational velocity tests are not "injector" specific tests. A buzz test is as close to an injector specific test...but...an injector buzz test, merely checks the electrical continuity to/from each inj to the IDM. Basically...if all 8 injs 'buzz'...then that merely meansthat they are plugged in. No determination can be made about whether the injectors are good or bad..or somewhere in-between. The consistency (in tone) of the buzz test (audibly)should be considered and paid attention to when a buzz test is performed ...since any difference in sound can indicate problems (or just normal wear issues) related to the movement of the poppet valve, when it is pulled up by the (energized) solenoid." [/QUOTE]

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