detroit 60

[RGRAT1618]

My fire dept got a new Pierce Pumper this past week. It has a detroit deisel 60 series 515hp engine. At an idle, it seems like the turbo kicks in and out. Is this in fact the turbo and if so, Why is it doing that.





Rob G

 

[Will24]

are you sure the fan is not kicking on and off causing a load on the engine?. EGR detroits do do some strange things though...





-Will

 

[nickleinonen]

the turbo on those engines is a garrett vnt i believe. maybe it is tightening down on the vains [which will cause the turbo to spool] to create some back pressure to make the egr system work?

 

[ata]

It could be the Air Compressor cycling. (air system) Does it have Air Conditioning could be the compressor for that cycling.

 

[RGRAT1618]

At this point I know it is not the fan, a/c compressor, or air system compressor. I it is the turbo.

 

[Will24]

Yeah, but anyone of those devices would cause a load on the engine, thus spooling the turbo

 

[RGRAT1618]

It happens when the engine is cold or hot. Always at an idle.



Rob

 

[cumminspwr01]

Originally posted by nickleinonen

the turbo on those engines is a garrett vnt i believe. maybe it is tightening down on the vains [which will cause the turbo to spool] to create some back pressure to make the egr system work?

It is the turbo and the reason it cycles is because it is a variable vane turbo. More or less like he said