I have an 87 hardtop which is stock except for 3in shackles and 215 size tires. I have noticed that every time the roads are wet there is this hesitation while accelerating it seems to let up when I let off on the accelerater somewhat but it seems like the spark is "leaking"out somewhere... Only when its raining or snowing does this Happen... (~¿~)
The distributor cap may be getting condensation inside and carbon tracks or a film inside it could aggravate it. The spark will jump around. Mine was doing that in the mornings while going to work. I replaced the cap and rotor and the problem disappeared. Good luck. Hahnderosa
'88.5 hrdtop, 29's on 15x8's, want small lift + big exhaust.