Fuel Injection Test

Steel1 said:

Yes turning the key on will build stock rail pressure to check for leaks, you could always key it on / off / on, in case your f.p. is
a little weak.
Ports should be capped off it they are open or you'll have a vacuum leak.

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jrichker said:

Here's some help for the vacuum lines - Red line goes to the fuel pressure regulator.
Speed density cars: One goes from the manifold to the MAP sensor on the firewall behind the upper manifold.
Mass Air cars: NO connection goes from the manifold to the BARO sensor on the firewall behind the upper manifold.

There is a cluster of vacuum lines on the passenger side wheel well. A plastic sleeve covers the colored part of the lines: push it back to see the colors I am referring to.

One white line from the vacuum line cluster goes to the rear smog pump valve. One line goes from the manifold to the red line on the vacuum line cluster. One green line from the vacuum line cluster goes to the EGR, The black line from the vacuum line cluster goes to the from smog pump valve.

One large vacuum line from the front goes to the carbon canister control solenoid.

One large line goes to the vacuum tree

One large line to the PVC valve.

Some help from Tmoss (diagram designer) & Stang&2Birds (website host) with a picture...

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