testing for a hpo leak

[Tex99F-250]

I was talking to a local diesel mechanic and he told me how he checks for a hpo leak (the injector o-rings). He told me to take the oil line off one head and plug it. he said a powerstroke will run on 4cyl. if it wont stay running you have a hpo leak on the unplugged side. Does this sound like bs or has anyone else heard of it.

[Dirk]

Ok, I'll bite.


For $hits and giggles, how did he say to plug the line? Do you just put the line back on the head and do the same for the other side?

[IanThrones]

It might work I have only worked on inline engines of that nature and I just check pressures and go with my gut feeling

[Tex99F-250]

not sure how he plugged the line. dont even know what threads they are. he acted like he just capped it . and if ran do the same to the other side. he said its a good way to eliminate which side it is if you dont want to do them all.

just wondering if anyone else has heard of it.
Btw he is a good diesel mech. and knows his stuff.

[Tex99F-250]

no one else has an opinon