Onan 7500 diesel

buzzinhalfdozen · 06-02-2015, 09:12 AM

Gen. set runs OK, produces good power but has always since I've owned it had a "hunting" rpm. Most times it just runs at a constant rpm, but with almost any added load it seems to ramp up the engine speed, at times it will go up and down slowly. Serviced it last fall new filters oil ect. Thought I recall reading somewhere that these basically run at a constant rpm, is this a sign of an issue? Thanks Joe

06-02-2015, 09:12 AM	#1
buzzinhalfdozen Senior Member Join Date: Sep 2006 Location: Bellevue Ohio Posts: 984 Likes: 0 Liked 11 Times in 8 Posts	Onan 7500 diesel Gen. set runs OK, produces good power but has always since I've owned it had a "hunting" rpm. Most times it just runs at a constant rpm, but with almost any added load it seems to ramp up the engine speed, at times it will go up and down slowly. Serviced it last fall new filters oil ect. Thought I recall reading somewhere that these basically run at a constant rpm, is this a sign of an issue? Thanks Joe __________________ Joe Buchanan SS/BX 3117