Services aren't really services these days. They may only have changed the oil and filter. They won't have done a full inspection.

I'd suggest going back to the garage that did the service (if the car drives), demonstrating the noise and asking them to check their work. If you have breakdown cover with home start, you could get them out to take a look and, if necessary, recover it to the garage.

It is unlikely that the garage has done 'something' intentionally, but sometimes they leave something loose, forget to replace the dipstick or similar.

If you had a red check engine light, don't start the car.

<< I don't know if you've ever experienced some problems in life which start gradually and aren't noticed until they get really bad. >>

i like this idea. If a problem is 'not noticed' how does anyone know that it started before it was noticed ? It's only natural to imagine that a recent service may have been the cause, but you have to identify the source of the noise before making any connection.

Glow plugs or Spark plugs?

Good point, I was presuming this was a petrol car as most I've encountered seem to drink from the green pump so Spark plugs. I have seen badly fitted plugs in the past - especially where they get mis threaded in an alloy head. In time this can cause issues where the plug becomes loose / blow past etc causing vibration/ knock etc. It was the passage of a few days after service that made me wonder.

Edited by Big John on 29/01/2024 at 16:34

I think you need a good local independent garage to listen to the noise. Should be fairly obvious as the noise/vibration is present when idling.

Edited by Big John on 29/01/2024 at 17:42