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The IO-520 in my Cessna 210 is running rough. It seems to run smooth
at 1000 rpm but the roughness appears above about 1400. One cylinder is “cold” and apparently not producing any power. I pulled the rocker cover and found that the intake valve spring was broken. My mechanic and I replaced it yesterday. But the cylinder is still not producing. The compression is good (74/80). The spark plugs are good. He’s going to check the flow through the fuel injector later today. Any more ideas? What should we do next? Thanks! John Clonts Temple, Texas N7NZ |
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