1850 engine miss

[C C Farms]

I have an 1850 with the perkins diesel I recently purchased and it has a slight miss at higher RPMs. It runs just fine up to about 3/4 throttle and then it starts to flutter, or miss slightly. It's not bad enough to cause a loss of power, but I can here it and see small puffs of smoke. I do not know the history of the tractor. Anyone have any ideas about what could be wrong or what to look for? Thanks

 

[BM]

That is caused by loose injection pump drive. most of the 1850's had a short splined shaft between the pump and it's drive gear and when the male and female splines on both ends wore enough it caused a timing flutter. The later tractors had a slightly different design and the problem was eliminated. Oliver even had a conversion package to update the earlier tractors. Honestly, it dosen't hurt a thing, usually goes away under load, and it's more work and expense than you'd think to change one over to the new style. It's just a annoying.

 

[olrusty]

There is also a bronze gear within there the drives the pump from the idler shaft. If you need that let me know i have one just setting there. Ten Buck its yours + Actual shipping

 

[C C Farms]

Thanks, but I think I'll let it go for now. I don't think it's hurting anything so I'm going to wait until I have time for an overhaul.