My freind and I took out the spark plug of the #1 cylinder, and found the plug to be slightly covered in oil. We left the plug out, and when we turn the engine, oil "squirts" out the hole. Is this due to a bad piston ring? The car does start after we clean the plug, but then it would start to boggle and die again. The engine is a B18CR, w/JRSC. Thanks.