Spark Delay Valve
- Remove valve from vacuum line and attach colored end of spark delay valve to an external vacuum source. Using a piece of vacuum tubing, attach white end of valve to a vacuum gauge.
- Apply 10 in. Hg, using an external vacuum source, and note reading on gauge and time for reading to be reached. Vacuum gauge should read from zero to 8 in. Hg in 2-5 seconds for Brown and White valve or in 9-20 seconds for a Green and White valve.
- If reading does not reach 8 in. Hg and/or is not within specified time range, replace spark delay valve.
Courtesy of FORD MOTOR CO.