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Valve Adjustment Bias Error? 3 weeks 6 days ago #32179

  • dcarver220b
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Last March did a valve  adjust . Later discovered slight oil leak from valve cover cap.Removed cover. Thought I'd QC my work and re-measure clearances.

Sure as sh$t, 3 measure LOOSE. WTFO?I was soo careful to follow the FSM to the letter. Checked and double-checked?

So what happened? How was this error introduced?
  • ​Could it be that after 30 minutes of running, things 'settled' in to allow more clearance? Which led to this consideration.
  •  
  • I routinely add engine oil to the bucket via a syringe. Is it possible that, in certain cases, the oil is 'trapped' in the bucket, creating a 'wedge' resulting in clearance reduction which in turn is increased by installing a thinner shim? Then, after some run time, the oil gets squished out, the clearance increase?
Just wondering about things on a rainy day...

 

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Last edit: by dcarver220b.
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