Tapping noise 99 gmc 4.3 vortec

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Mar 21, 2017 | 08:54 PM

x_gijoe04

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Tapping noise 99 gmc 4.3 vortec

When first started no noise, under rev or load a tap can be heard when warmed up can hear a tap when idle and rev engine the tap is when let off the throttle

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