Quick question,does the motor get quiter as the valve clearance needs doing or makes or tappet noise? i have been told quiter
bloke&tackle wrote:It depends on the engine, but generally the clearances close up as the valves hammer themselves deeper into the head, but component wear...e.g. cam lobes, rocker gear etc. can work the other way and give more clearance.
The "sonic check" is a new one on me and I've been a diesel mechanic for 39 years, it sounds like somebodies creative "bullshit baffles brains" terminology to confuse a customer asking a legitimate question.
It's important to keep valve clearances in spec. as this affects valve timing and in turn, performance.
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