i would say find a daring buddy who cares a little less for life and the two of you go to an unused stree where you will have enough time to locate the sound.. and have your friend find it for you. other then that i cant think what would cause it. other then a whistle hidden somewheres.. haha
but seriously ya thats my suggestion.
Tried that once trying to get the timing set on a 59 chevy convertible...my cousin ended up out on the pavement at about 60mph...wasn't pretty!
