* Your Owner's Manual: Check the owner's manual that came with the car. It might have a simplified diagram or at least identify the major vacuum components.
* Haynes or Chilton Repair Manuals: These manuals often include detailed vacuum line diagrams. Look for one specifically for a 1987 Chevy Celebrity. They're usually available at auto parts stores or online.
* Online Forums: Search online forums dedicated to classic Chevy vehicles or the Celebrity specifically. Someone might have scanned a diagram or have a digital version they're willing to share. Try searching terms like "1987 Chevy Celebrity vacuum diagram [engine size]"
* Local Auto Parts Store: A knowledgeable parts counter person at a chain store like AutoZone, Advance Auto Parts, or NAPA might be able to access diagrams through their computer systems or have access to a relevant repair manual.
* eBay or Online Classifieds: You might find a scanned copy of a workshop manual or a reproduction of a vacuum line diagram being sold on sites like eBay.
Important Note: When using any diagram, double-check it against your own vehicle. Modifications or repairs might have altered the original vacuum routing. If in doubt, it's always best to consult a qualified mechanic.
