91 YJ with a 98 cherokee engine, fuel pressure question
My friend bought a YJ with a 4L 98 cherokee engine in it. He has a fuel pump problem and wants to change it but I told him that I believe the YJ 4.0L uses the old injector that run at 39psi. The 98 4.0L should run at 49psi as per the service manual. What does he have to do in order get the proper fuel pressure, adjustable regulator? TJ swap tank?