7120 blowby

Anonymous-0

Well-known Member
Have not had it diagnosed in any way, yet. Heard a fella should do a wet and dry compression test. Check for leaking oil seals in turbo. What else? If the rings went bad on it, then an inframe engine kit should fix it. Also should replace injectors at same time, in case they are guilty of washing down the cylinder walls with too much diesel. Thoughts? What else to look for, and what else to replace, service if a person were to buy a 7120 with a blown engine? It runs, just has an enormous amt of blowby.
 
Define excessive amounts of blow by. 8.3's typically have some blowby.

When was the last time the heads have been gone through? Check the valve lash?

Checked the valve lash on my 8920 when I got it and it made a big difference in power and smoking.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top