I have a 951 Di I have rebuilt. I rebuilt the compressor also with all new parts including compressor piston, rings, connecting rod, bolt etc (all SD parts). The compressor has almost NO compression. I put my finger over the hole and barely feel anything. I had no issues with the compressor before disassembly. I took it apart again and I see absolutely nothing wrong. It would be one thing to have LOW compression, but almost nothing? the engine is spinning plenty fast, I put my hand by the areas where the gasket and seal are located and I dont feel any pressure escaping. I checked the piston/cyl wall clearance and ring end gap, and they are within specs. any ideas?
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Di compressor issue
- Thread starter Boyd12
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jhjesse
Well-Known Member
Set up a gauge using some hose and clamps. Install it and crank the engine to see if it starts building pressure. Should build to 27psi after approximately 5 to 8 revolutions of the engine.
If it builds any pressure, see if it holds that pressure and for how long.
If it builds any pressure, see if it holds that pressure and for how long.
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