Question about Craftsman 3 gal. Air Compressor, 1.5 hp, Horizontal k

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Oil shooting out of cap - Craftsman 3 gal. Air Compressor, 1.5 hp, Horizontal k

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Two probably causes are:
1. Too much oil in the crank case. Compressors don't have a lot of oil in them and the oil level must be at the full mark on the dip stick or sight glass. Over filling it will make the motor work harder and some oil will get forced out the vent cap.
2. You may have compressed air going into the crankcase causing oil to get blown out the vent cap. This occurs if compressed air is getting past the piston, either through a hole in the piston or past the rings because either the rings or cylinder are damaged.

Posted on Feb 21, 2012


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