how to stop lifter ticking?
55

Asked by Irvin Apr 07, 2010 at 11:12 PM about the Nissan 300ZX

Question type: Maintenance & Repair

well as you all know our cars have lifter ticking after a while. i tried thicker oil and all that did was lower my oil psi. it was 10w-40 mobile 1 now im using 10w-30 and the psi is much better. but i still have the lifter ticking. HOW DO YOU FIX THIS??

5 Answers
16,160

Larry answered 14 years ago

The correct way to eliminate lifter noise is to adjust the valvetrain back to factory specfications.

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55

Irvin answered 14 years ago

it has never been messed with before tho

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16,160

Larry answered 14 years ago

Well as the engine runs the valve lash slowly increases. If they are not re-tightened periodically then the keep getting looser to the point that they tick.To fix this the valve clearances are set back to what they were originally when the engine was first assembled.

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50

Jonathan answered 5 years ago

Larry 300zx are fitted with hydraulic valve lifters and therefor require no adjustment. They get blocked with oil varnish over time and either need cleaning or replacement.

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20

Diederik answered 4 years ago

use full synth oil only and do correct oil changes and use good weight oil

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