here is my problem. Possibly some of you can give me some details of what is happening.
It starts and runs well 125k on a 1987 4.0 has a slight hesitation when you press throttle rapidly. Seems like it has the power no noise, no leaks, pretty good runner but it does have the hesitation. So far I have not noticed any loss of power and the power is there when you ease on the throttle, but if you step on it quickly it has a definiate hesitation.
It starts and runs well 125k on a 1987 4.0 has a slight hesitation when you press throttle rapidly. Seems like it has the power no noise, no leaks, pretty good runner but it does have the hesitation. So far I have not noticed any loss of power and the power is there when you ease on the throttle, but if you step on it quickly it has a definiate hesitation.