Stop in for a cup of coffee
Don't know. Mine's on an AMC.
Inside are two diaphrams instead of just one. My '84-5 FSM has the diagram but doesn't explain it. Just says to test it on the engine, which of course is near impossible on the V-8 has its all the way in the back requireing a dental mirror etc to see the damn thing move. I must have found the explaination in an early book or something...