There are many reasons why you might need to bleed your diesel engine, and few of them are good: You’ve run out of fuel, the fuel filters are clogged with dirty fuel, you’ve had to replace a secondary filter. If bleed you must, and sooner or later, unless you have a new high-tech common rail engine, you’ll probably need to get the air out of the system manually sooner or later. Take a look at this fast guide and then practice bleeding your diesel while you’re still at the dock, so you have this drill down perfectly. It will be…