LB7: Fuel in oil

kking

~only stock for now~
Mar 20, 2013
81
0
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Il
New to this whole thing. Anyhow I replaced my injectors about a month ago, pulled a vacuum on the return lines everything checked out okay now I'm still getting fuel in my oil!! Any thoughts? Checked balance rates after installing new injectors. Possibly cp3 leaking?
 

mike diesel

I'm alright.
Sep 6, 2012
4,005
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SLC, Utah
May want to pull the valve covers and fire it up so you can physically watch the return lines for any leaking. Were you injectors Bosch remans or were they refurbs? Refurbs are junk. Its always a possibility an injector body is cracked as well regardless of how new they are.
 

kking

~only stock for now~
Mar 20, 2013
81
0
0
Il
These were Bosch remans from Merchant, when they were installed i had to tear back into it myself and fix a return leak, may have found a bad reman though last night when I got home I plugged in the cts and injector 2 was all over the place anywhere from +3.6 to +4.2
 

catman3126

Ehhh?.... You don't say?
Jul 24, 2012
2,636
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NE Oregon
All these horror stories about this issue make me never want to do a set of these. And I haveva set to do soon.
 

catman3126

Ehhh?.... You don't say?
Jul 24, 2012
2,636
0
36
NE Oregon
Nope customers lb7. Yeah ours are no big deal. Just would hate to have to pull this guys back apart only dime due to fuel in the oil. I though when I saw the thread about the banjo fitting with the vaccuum pump that it would be no big deal but the op did this and still had an issue. So almost don't even want to take this job.
 

kking

~only stock for now~
Mar 20, 2013
81
0
0
Il
Finally figured out what the problem was, pulled the cp3 out over the weekend and shaft seal was out on it. I could watch the fuel come out just by turning it by hand.:woott:
 

LBZ

Super Moderator
Staff member
Jul 2, 2007
9,905
151
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B.C.
Finally figured out what the problem was, pulled the cp3 out over the weekend and shaft seal was out on it. I could watch the fuel come out just by turning it by hand.:woott:

Good catch!!