I hear people talk about the spark advance solenoid located by the distributor...Looks like alittle flying saucer :-) Is there a way to check to see if it is bad? mine has the vaccum lines on it and the electrical plug but just wondered the failure rate and symptoms? This does not seem to be a part you would normally replace on a tune-up. Mike C 2109 [Non-text portions of this message have been removed]