Try autozone.com They have a good "Emissions" section, that breaks down into componets. They don't have everything ever invented, but they have the biggest slection of vacuum diagrams, all on one site, that I have ever found.
It is a vacuum line diagram for a 1988 Toyota Corolla. What else would it be. :-) Just playing. You can find one [http://www.themotorbookstore.com/corolla2.html Here]
A link to more information about the Toyota Supra can be found in related links.
I have a 1988 chevy s10 pickup 2.8. I went to the service department at my local chevy dealership and they printed out 3 diagrams for me for free.
I do not know about a 1988 Isuzu PU, but I have a 1992 and the vacuum diagram is on the underside of the hood. You may need to clean it up a bit to see it. I did. Hope this helps. morempg2u
You can find a 1988 Toyota carburetor diagram at most Toyota dealerships. The diagram can also be found in Toyota service manuals at your local library.
how do you hook up vacuum lines in a 1988 Chevy nova
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Vacuum hose diagram 1988 gmc s15 2.5
The vacuum line diagram for a 1988 Nissan Z24i can be found in its maintenance manual. It can also be found in the cars repair manual.
You just unscrew it.
When making any changes to a vehicle, a diagram can help point the person in the right direction. A vacuum line diagram for a 1988 Plymouth Horizon can be found in its maintenance manual.
haynes repair book at auto parts store or get a Nissan truck service manual,check eBay .the dealer wants 75.00.