Ah, well, never had a diesel one but that sounds rather like the head is gone. Does the heater work? Have you just been using it around town?
Cooling etc is the same on Diesel as Petrol
I presume you've already tried replacing the tank cap?
@Jw89 started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Ah, well, never had a diesel one but that sounds rather like the head is gone. Does the heater work? Have you just been using it around town?