C7 making oil
07-10-2019, (Subject: C7 making oil ) 
Post: #5
RE: C7 making oil
Most C7's have a fuel lift pump on the back of the HEUI pump. Fuel could leak in from there. Two rails in the head, one for fuel and one for high pressure oil. Separated by o' rings. If it is an o'ring issue it is usually putting oil into the fuel because oil pressure there is always at least 400 plus psi. Fuel pressure from lift pump usually only about 100 to 120. Look on you tube for adept ape. He has a lot of CAT info.

Messages In This Thread
C7 making oil - tree98 - 07-08-2019,
RE: C7 making oil - Unilevers - 07-08-2019,
RE: C7 making oil - tree98 - 07-09-2019,
RE: C7 making oil - tree98 - 07-10-2019,
RE: C7 making oil - DVT873 - 07-10-2019

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