Your little helper: A simple diagram that may help you to solve malfunctions in your TBI vacuum system.
Applies to Chevrolet/GMC L03 (5.0L) and L05 (5.7L) TBI engines 1987-1993.
Maybe you know the problem: I’ve hundreds of pages of wiring diagrams, but only one incomplete vacuum diagram in bad printing quality. If you search the internet or look at your repair manual, you’ll find stuff like this:
The image only shows the vacuum lines that belong to the emission control system. Next problem, if you have no idea how an EGR Solenoid or MAP Sensor look like, you might have trouble finding the parts at your car.
This might help better:
