Our 88 F-250 4x2 300six 5spd, We just did a tuneup, wires, plugs,10,000 miles ago well the truck skipps at low RPMs but when you put your foot into it it clears up. The truck has 130,000 miles. and has been well cared for.

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88 F250 300 six 5spd pickup

99 F250 4x2 5.4 auto rackbody dump 4.10

00 F350 4x4 PS 6spd drw 9ft rackbody 4.10

04 F250 4x4 5.4 6spd pickup 3.73

 

Possibly EGR related, check over in the 300 six forum, they can tell you more.

 

Thanks I will check it