Once you have the injectors installed and the glow plugs still out its time to bump the starter to turn the motor over. This forces the oil that drained down while the

injectors were out to shoot out thru the hole the glow plugs are normally in. Failure to do this step can cause damage to your engine.

But a word to the wise. Failure to cover the heads with something pretty strong can cause damage to YOU.

Check out what happened to my son when he tried to use paper towels that were doubled over to be thicker to block the oil that came out the glow plug holes.

Note this was on the very first bump of the starter. Didnt even feel like the motor moved any.