'Bucking' on acceleration

[65Ford]

Hey guys- Problem started recently. Mainly under a load but has done it moving out from a stand still on level ground as well. Truck will 'buck' pretty heavily at times. I just had to replace drivers exhaust manifold gasket and pulled plug wires and EGR to make room to work. I've pulled wires back off and put on and connections seem good. Not sure if bad EGR would cause this. I went to check coolant level and it's pretty low. I heard one time that a bad coolant temp sensor can mess with things, can a low coolant level/bad sensor cause a bucking problem? The truck has never had good power going up hills and what not, always have to down shift couple gears. I freshened motor up with new rings, bearings etc. 23K miles ago so compression is good. Wires plugs are fairly new as well. I'm pretty good at changing parts but not so good at diagnosing problems, any help would be greatly appreciated. 94 4.0L 5 speed -Thanks-

 

[06RangerXLT]

had the same problem, sounds like a missfire. does it more when its wet out?

Im guessing when you moved the plug wires, the boot tore, or a plug cracked. id start there. any engine light?

 

[65Ford]

Thanks for reply. No CEL. Just started happening, no rain yet. Checked TPS and voltage through its range looked ok. Air box is clean with newer AirHog filter. Gunna check wires/plugs tomorrow. Any other sensors to check?