where is "fuel atomizer vac line" on s5 n/a?
where is "fuel atomizer vac line" on s5 n/a?
vac line
Well I don't have a picture for you, but maybe I can explain...............
for each of the four injectors, there is a nipple supplying fresh air to the socket the injector mounts in. This gives a bit of a 'downdraft' around the injector body, because the air supply is at atmospheric, while the runner the injector is spraying into is in vacuum. This helps to atomize the fuel spray.
The two nipples for the secondaries are easy to spot - right below the injector. The primary nipples are in the lower intake manifold, on the block side, and feed through a small passage into the center iron onward to the injector socket. You have to pull the upper intake manifold to see them. All four nipples are supplied with filtered, metered air through 'vac lines' from a metal tube under the upper intake (the 'vacuum spider' as it's commonly referred to).
The same system supplies air to the oil injectors for the same reason / effect.
There's a schematic in the FSM.
for each of the four injectors, there is a nipple supplying fresh air to the socket the injector mounts in. This gives a bit of a 'downdraft' around the injector body, because the air supply is at atmospheric, while the runner the injector is spraying into is in vacuum. This helps to atomize the fuel spray.
The two nipples for the secondaries are easy to spot - right below the injector. The primary nipples are in the lower intake manifold, on the block side, and feed through a small passage into the center iron onward to the injector socket. You have to pull the upper intake manifold to see them. All four nipples are supplied with filtered, metered air through 'vac lines' from a metal tube under the upper intake (the 'vacuum spider' as it's commonly referred to).
The same system supplies air to the oil injectors for the same reason / effect.
There's a schematic in the FSM.
