When hydrostatic testing a plumbing system, when the time comes to end the test a flow through plug is ideal for draining the stack or main without the normal spillage one would normally have
How do I by pass the glow plug controller on a 6.2
The pump is worn and I need glow plugs for starting the engine when warm
If the engine is warm, glow plugs are not needed. Sounds like you have a sticky delivery valve in your pump. Try a fuel additive with lubricity and cetane booster. IE PowerService Also, before you start the engine give the foot feed a pump like you would a carburated engine. This will move the valve manually and hopefully work it to free it up a bit.