Quote:
Originally Posted by JD159
Hi Makis,
If I at some point had material score the lifter bore, could that cause binding severe enough to cause lifter noise? From the appearance of the lifters they appear to be rotating.
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If the lifter bore becomes to large due to ware then oil pressure in the bore will decrease. As a result the lifters are starved from oil and become noisy. This also is more true when the engine is hot (oil is hot and thin) and the presure as a result drops more then cold oil, making the lifters noisy. So in your case it maybe this. How many miles is the engine?