Re: Hydralic lifter noise

Posted by HH56 On 2017/5/16 9:49:26

I am curious why only when hot. I think I would check the oil pressure with a mechanical gauge in place of the sender or maybe permanently add a hidden mechanical gauge setup in parallel as a backup. There are ports on the main gallery on passenger side of engine where this could be done and the sensing tube run somewhere so the gauge is tucked out of sight.

The oil pressure is spec'd at around 40psi at normal driving speed but is considerably lower at idle. Maybe something is worn or the oil is the wrong weight and when hot, is thinning so much that the noisy lifter is a symptom of another problem coming to light.