Clunk/nock at tickover

  1. My model of MX-5 is: __ND1 2.0L Sport
  2. I’m based near: __Wales
  3. I’m looking for technical help or recommendations on: __noise at tickover

Hi All,
Thank you in advance for any help or guidance.
I notice that when the car is in neutral and tickover I get a deep clunk every few minutes. I thought it was an expansion noise (exhaust?) as the engine got warmer and things shifted but today whilst stuck on the M56 for an hour I noticed the same clunk but not so loud.
It occurs regardless of clutch pedal position.
Any help before I resort to the garage would be appreciated.
Regards Doug

It’s not the air conditioning compressor switching in and out is it? Does it stop with the A/C off?


Hi Robbie, thank you for that. Yes it is ! So glad I didn’t take it to the garage. Help very much appreciated.

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