20-08-2014, 08:32 AM
The calipers trap air in them? Seems like a well thought out design! 
And no, the engine doesn't need to be running to bleed them, the ABS pump should all be 'open' with the engine off anyway.

And no, the engine doesn't need to be running to bleed them, the ABS pump should all be 'open' with the engine off anyway.