Keith Browning Posted June 26, 2008 Share Posted June 26, 2008 This is for the guys who have done any base engine repairs: I noticed something odd with this engine when I was barring it over by hand to position it and tighten the valve rockers. I could turn the engine about 45 degrees and it seemed like it locked up. So much so that I went to the other head and pulled the glow plugs to be sure fuel didn't leak into the cylinders while I had it apart. (I only had one head off to repair a valve) That turned out to have no affect and the crank didn't move enough to support the idea that something was in a cylinder. So I messed with tis a little more and realized that if I moved the crank faster and continued to push through the resistance the engine continued to spin freely. /forums/images/%%GRAEMLIN_URL%%/scratchhead.gif So after thinking about this a bit, I wondered if this could be related to the HPFP somehow. Did any of you experience this during assembly? I don't suspect any engine damage and the valve concern was caused by rust in the guide. Just seems odd to me. Quote Link to comment Share on other sites More sharing options...
Aaron Posted June 27, 2008 Share Posted June 27, 2008 Camshaft timing different than you're used to like baring over a gas motor on the compression stroke? Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted June 27, 2008 Author Share Posted June 27, 2008 Compression wise it's a non-issue at this point because the injectors are still out on the head I had off and I removed the glow plugs from the other. Quote Link to comment Share on other sites More sharing options...
Aaron Posted June 27, 2008 Share Posted June 27, 2008 "Compression stroke" in the HPFP maybe? That's a strange one. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted June 28, 2008 Author Share Posted June 28, 2008 I was thinking along those lines. I only had one head off so 1/2 of the valves were still opening... maybe I am imagining things but it seemed to loosen a bit after tightening down the right side rockers. I put all the glow plugs back in and buttoned it up, before I lower the cab I'll check it again but of course it will be compressing air in the compression stroke now that the engine is fully assembled. Quote Link to comment Share on other sites More sharing options...
bik717 Posted July 4, 2008 Share Posted July 4, 2008 a 6.4 or 6.0 my shopforman was replacing a hp pump on a 6.0 because it was actually siezed could only turn it about a quater of a turn Quote Link to comment Share on other sites More sharing options...
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