ryjeffries
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I have a Eagle Compressor based on an '86 Bauer Capitano block. It came loaded from a fire house with auto drain, high pressure shut-off, and low oil pressure shut-down. Use is ~450hrs, with the last 120 from me. I run the compressor 1-3hrs at a time mostly to CB 32%. At the end of a run last Saturday morning the over-pressure valve between the 2nd and 3rd stage began venting. Oil pressure is normal, no bubbles in the sight glass, condensate dump working, no other noises. It was running fine over 3hrs then suddenly the OPV started venting around 850psi. I'm guessing this indicates a problem with the intake side of the 3rd stage. I thought I'd get some ideas from the compressor gurus, and leave everything together for diagnosis, before taking things apart. I'm familiar with automotive trouble trees, so something similiar would be greatly apreciated, however any thoughts or advice is appreciated.