The intake ones have the larger end and both can be identified by the size if the oil hole.
Look at the hole of each part and you will see that 2 will have larger holes than the other 2.
The large hole parts are for the intake side and the other 2 are for the exhaust. ..............lm
inog1 wrote:Thanks for all the replies.All were helpfull, and the four pins are now all out without benefit of any special tools.Once again this board has proven its usefulness ! Thanks again all, and HAPPY HOLIDAYS.