Hydraulic Valve Lifter Noise

Possum104
30

Asked by Jul 01, 2011 at 10:44 PM about the 1993 Nissan Pickup 2 Dr STD Standard Cab SB

Question type: Maintenance & Repair

I have hydraulic valve noise at all RPM. I removed valve cover and identified the rocker arm with play, but it has no adjustments. I do not see any type of hydraulic lifter, but the Haybes Manual says valves are hydraulic with no adjustment. Where is the hydraulic lifter?  Can it be replaced?

1 Answer

Possum104
30

The hydraulic lifter is located in the rocker arm where it contacts the valve step. It is only about the size of a pencil in diameter. The faulty rocker arm can be individually replaced. Remove the rocker arm shaft, slide the rocker arms off the shaft until you get to the defective rocker arm and reinstall in the opposite sequence that everything was removed. You may need to clean oily deposits from the shaft prior to sliding rocker arms off.

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