Smoking #1 cylinder on My Ford 3000 Diesel

[kc5sii]

Did you have the head fluxed? That's not likely the problem but it wouldn't hurt since you already have the head off.

Dave

 

[90cummins]

Your head was just rebuilt so do not lap the valves!!
You do not need to lap a valve if it is removed, I would only lap it if there were many hours on it and the seats looked rough or were leaking. Lapping compound can restore a seal as last resort to a valve job.
Many manufactures no longer recommend lapping, rather they now promote marking the valve with 4 lead pencil marks and then turning the valve on the seat ¼ turn to see if the valve is making full contact with the seat.
In your first post you said the head was rebuilt. The engine was running fine so there is no need for that. Also lapping compound is an abrasive so you must remove all traces of it.
Did you remove another piston to look at the oil ring? You are definitely missing the inner expander behind the oil ring rails.
As for the valves seals, I would prefer seals that fit over the guides but either will work in this application.
The lines in the guides are from the resizing process. Rather than machine the head and install new guides they knurl the bore to raise metal then ream it to size. Much cheaper.
I can see you are getting frustrated/confused, do not get off track.
The first priority is to verify whether the oil ring is missing a piece so removal of 1 piston or call the manufacture and ask if the ring is a 3 or 4 piece design.
That oil ring is the source of your trouble!
If you send me a private message & phone # I would be happy to talk with you..
90cummins

 

[90cummins]

Just noticed I live in western ma also.
We may be neighbors???
I live in Florida MA.
90cummins

 

[mtodd101]

Hi Dave. I don't know what fluxed is ( will google it when I'm done typing) so it wasn't something I asked the machine shop to do. Thanks for adding to conversation. Matt

 

[mtodd101]

Your head was just rebuilt so do not lap the valves!!
You do not need to lap a valve if it is removed, I would only lap it if there were many hours on it and the seats looked rough or were leaking. Lapping compound can restore a seal as last resort to a valve job.
Many manufactures no longer recommend lapping, rather they now promote marking the valve with 4 lead pencil marks and then turning the valve on the seat ¼ turn to see if the valve is making full contact with the seat.
In your first post you said the head was rebuilt. The engine was running fine so there is no need for that. Also lapping compound is an abrasive so you must remove all traces of it.
Did you remove another piston to look at the oil ring? You are definitely missing the inner expander behind the oil ring rails.
As for the valves seals, I would prefer seals that fit over the guides but either will work in this application.
The lines in the guides are from the resizing process. Rather than machine the head and install new guides they knurl the bore to raise metal then ream it to size. Much cheaper.
I can see you are getting frustrated/confused, do not get off track.
The first priority is to verify whether the oil ring is missing a piece so removal of 1 piston or call the manufacture and ask if the ring is a 3 or 4 piece design.
That oil ring is the source of your trouble!
If you send me a private message & phone # I would be happy to talk with you..
90cummins

Ok, no lapping which is a relief as again that would be something new for me. Is there a way to clean the carbon off of the valve stem? Not sure if that is important, but it is quite dirty. The engine does run fine. I have not had the time to pull another piston yet. Hopefully this weekend.

As far as the guides, the head must have had work done in the past because of the knurl grooves? Must have been before my father owned it. I'll post cylinder #s this weekend. Thanks again. I may need to talk to you in the future. I appreciate the offer. Matt

 

[mtodd101]

Just noticed I live in western ma also.
We may be neighbors???
I live in Florida MA.
90cummins

Hey Cummins. Man would I love to live next to you, but I'm in Washington State on a place called Whidbey Island. I might be inclined to help with relocating cost if you'd move here and figure this out. Although I think most of you guys already know what's wrong, I'm just trying to catch up Have a great day, Matt

 

[90cummins]

OOps thought it said Western Mass.

have a good day!
90cummins

 

[LarryD]

We might be neighbors though Matt!

 

[mtodd101]

We might be neighbors though Matt!

Well that would save me some dough from moving Cummins out here. . I'm on the south end. Where are you?

Oh, I just saw your avatar. You must be on the north end?

 

[LarryD]

The noisy end for sure!