Did you check the pressure with a gauge? There will be a quick shot of fuel if you just press the valve, but not a constant flow. As far as the air, not sure. Don't remember if your '97 has an inline filter or not, but if it does, when was the last time you changed it? Post up your pressure readings. BTW, leave the gauge hooked up and shut down the Jeep. Wait a while and make note of pressure drop, shouldn't be significant.
93 Laredo 4.0
96 Limited 4.0
[QUOTE=murphydajeep;9487478]I say you should still hit something just to let it know you mean business, or shake a hammer at it in a menacing fashion[/QUOTE]