Help! Househam Sprayer's Iveco Engine Sporadically Down on Power???

[Robert]

We are having trouble with our Househam sprayer's Iveco engine. We ruled out dirty fuel and it had new injectors last year so something else is amiss. Normally operate it in field at about 1500 rpm but then suddenly it'll dip to 1000 rpm and then waver around and occasional return to normality before dropping down again. We have ruled out all turbo piping etc, there is a very small amount of play in turbo - don't know how to determine its impact? Or perhaps its something completely different. All suggestions very welcome please! Thanks

 

[Gone Shooting]

Ours was similar - long time ago but tank off and cleaned and replaced fuel pipes as one had gone soft in the wall.

 

[Lowland1]

We had major problems with one of ours as I recall it was a block in the fuel feed pipe. It took an awful long time to work it out.

 

[David.]

Are there any banjo unions anywhere in the fuel line, to attract detritus? If so, it will probably be that.

 

[Sorbaer]

We had a problem with ours. Was a fuel relief valve. We went through the same problems with thinking it was dirty fuel etc.

https://imgur.com/a/KehpE8B

 

[T C]

Had similar, really down on power. Tank off all fuel lines checked. Eventually took the intercooler pipe off turbo and there was a lot of play in it.
New turbo sorted it although it was challenging getting one.

 

[Robert]

We had major problems with one of ours as I recall it was a block in the fuel feed pipe. It took an awful long time to work it out.

Thanks - was this within the tank itself?

 

[Lowland1]

Thanks - was this within the tank itself?

Yes . I think we worked it out by drawing fuel from a 20 litre drum.