I am removing the manifold on truck only thing left to be disconnected is this pushpin.So question is what's the best way to remove a pushpin without special tools & without breaking it.It is the wiring harness pushpin connector at the bottom of the intake manifold.All the rest of the connectors were fairly easy to disconnect;this one seems tricky.Has any face this task before?The truck is Ranger 2002 Clone better known as Mazda B2300.