1996 cummins blowby
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This is not always an indication of cylinder blow bye .... It can also be caused by turbo blow bye, it comes through the return pipe from turbo... Could be either hot side or cold ... Take your oil return line off @block ... Place a hose over the line and then put the other end into a bucket with fresh oil .... Leave plenty of room ... If you see air bubbles ... Its your turbo and a simple rebuild will do the trick ... Keep us all posted on your results
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It could also point to a clogged crankcase ventilator. If it is, you can put a new factory unit on it but the design isn't that good. A better option is to put the valve cover breather on it from a Case (p/n: 2830784 and 4899194). There are a few more parts you'll need like bolts and seals, but the setup can be found with a Google search, I'm sure. Most of the ones I've seen use two (2 and 3, 4 and 5). Looks awesome, too.
Last edited by the.beard; 03-04-2014 at 03:35 PM. Reason: add photo
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I bought this engine as a short block I have all new hoses,gaskets and everything down correctly from ground up and the only thing I havnt done was check the pistons or messed with the hx35 which has 300k miles on the turbo and the injectors were rebuilt with all knew springs lifters head camshaft which is why I am concerned with a little blowby after everything was done