Editing Fuel Injector Replacement (section)

== Bleeding the cooling system:== 

Since you had to remove the manifold where coolant runs through, you'll need to bleed the cooling system to ensure no air is the system. This is just a quick bleed and does not outline a complete cooling system flush. Open the heater all the way by turning it to full hot in the car. Fit a bottle like a coke or brake fluid bottle with insulation tape around the neck to create a seal to the radiator filler neck. Like this:

[[Image:Injectorchange20.jpg|640px|center|link=]]

You can bleed the system at both of the bleed holes which I've circled here:

[[Image:Injectorchange21.jpg|640px|center|link=]]

However, I saw it fit to only bleed through the topmost hole as no coolant lower than that was lost. So crack the bleed bolt and fill up the bottle at your filler neck. Watch until green coolant or water comes through the hole then fit the bolt. Tighten it and start the engine. 

You will likely find it takes a bit longer than usual to crank as the injectors will need to fill up with fuel and start working, and there may be some debris in the cylinder from cleaning the injector holes in the runners. Once running listen to the engine and make sure there is no misfiring or unusual sounds, like vacuum leaks.

Continue running the engine if all is okay and bring up to temperature with the radiator cap still off. Once up to temperature you know the thermostat is open and coolant throughout the system, it's safe to remove the bleed bottle and fit the radiator cap.