Brad's Car Manuals: A 3rd party mirror of CHARM + LEMON car manuals
Home >> Chevrolet >> 1985 >> Sprint Standard >> Repair and Diagnosis >> Engine Performance >> System >> EGR Function Testing >> Testing >> With Modulator

With Modulator

Download the full database via torrent (~1.1 TB)
  1. Check vacuum lines for correct routing. Disconnect vacuum hose at EGR valve and plug hose end. Connect vacuum pump to EGR valve. Start engine. Apply 4.7 in. Hg to valve and hold.
  2. Engine speed should drop at least 100 RPM or stall. Vacuum should not drop more than 1 in. Hg in 30 seconds. Reconnect EGR vacuum hose.
scientia non olet · About Brad's Car Manuals