A new rattle, tap or knock from the engine
Is it there on a cold start, at idle or when accelerating? Note when it happens and whether it changes with engine speed. If there is a sudden loud knock or a low oil pressure warning, pull over as soon as it is safe and switch off. Avoid revving the engine to reproduce the noise.
Why the circumstances matter
A brief noise at start-up and a knock under load point towards different checks. The sound can come from inside the engine, from an accessory or from another nearby part. An existing recording can help describe it, but will not pinpoint the fault by itself.
When oil pressure or bearings may be relevant
An oil warning or unusual pressure reading can lead to checks on the lubrication system. Depending on what the inspection finds, it may also be worth assessing the bearings or crankshaft.
What helps us investigate
Tell us when the sound started, whether any recent work was done and what warnings you saw. We can use that information to plan diagnostic checks.
Start by telling us about the fault
Open WhatsApp, review the suggested message and decide whether to send it.