missing at higher rpms

[wanabebig]

did a search and couldn't find anything or i just wasn't putting in the right stuff.. but bought a 1992 f250 with the 7.3 and the 5 speed.. and it starts really good and idles fine but when it gets around 2000 or so rpms it starts missing out and gets worse the higher you go, and it also smokes alot of white smoke.. at idle it doesn't really smoke at all.. had a buddy smell the exhaust and he said it smelt just like diesel and nothing else.. confused?.. would love some help on this..

 

[Black dawg]

timing is too slow. could be worn pump or timing could be off.

 

[dyoung14]

Try advancing the timing some to start with, also get a new fuel filter and change it fill the new one with atf or diesel kleen

 

[Agnem]

What kind of mileage is on the IP and injectors? If unknown, or around 100K, I wouldn't bother messing with it. Just replace them. The truck is in obvious need of a "tune up".

 

[wanabebig]

I'm not for sure how many miles are on the pump and injectors.. the guy I bought it from said he replaced them not to long ago ans there isn't very many miles on them, but y'all kno and have heard that before.. it'd been settin around a year tho.. I changed the filter last night and filled it up with howes..