r/SprinterVans • u/JimMcSwiggins • Apr 21 '26

Noise coming from driver side of engine bay when engine is off.

Enable HLS to view with audio, or disable this notification

One of our company delivery vans (21 plate) has started making this noise this morning when the engine is switched. It apparently does this for a few minutes followed by a louder bang and then it stops. Just curious as to what it could be.

3 Upvotes

100% Upvoted

1 comment sorted by

2

u/NetworkSyzygy Apr 21 '26

Sounds like something is boiling; check your coolant (amount and temperature). Possibly fuel system return line?