1988 Ranger 2.9 L Bogs down

[88rangr]

This 88 has 236,000 miles on her, having problem with bogging down, but if I can hit the throttle down, it can get by the bogging and run well, replaced the fuel prssure reg and the MAP sensor, is this a dist problem you think?

Have not took the battery off to reset the computer yet, should that be done first then if still doing that, replace the distributor?

Thank you!