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Old 10-14-2013
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Diesel Smell

Hi All,

As I've mentioned before, diesel ownership on a sailboat is new to me. I've smelled/inhaled plenty of diesel exhaust in my day, (used to work at heavy duty truck dealerships and truck stops as a lad).

My 34 year old Universal 5424 with 3317.3 hours, starts up from cold... (30 seconds on the glow plugs) - no sweat. Warm engine... starts right up. Hits 2800 top RPM good and idles at 550-600 smoothly. No black smoke, exhaust is thin and fairly colorless with good water flow (fresh water cooled).

Here's the deal. At RPM's less than around 2100... smells like diesel to me, but get on it hard and you get that "somethings cooking" smell. It so alarmed me last week that I throttled back to look for problems. No change in exhaust color or density, oil pressure OK (no light), temp hovering around 150. It does this every time. Something I should be concerned about? Any thoughts or suggestions? Thanks as always.

Dave
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