Garywbryan
Member
Got a knocking in my port Ford Lehman 120. Injector? Any thoughts or advice. Just finished 800 mile trip.
It is white smoke and is clearly leaving a sheen of diesel on the water.Test as gsholz recommended then check for white smoke in the exhaust which my go away when the engine warms up, as may the knocking sound. If you have white smoke, stick your bare hand into the exhaust smoke then see if your hand feels oily. If so this is most likely is unburned fuel in the exhaust which is indicative of a bad injector. Dark smoke could mean lub oil in the exhaust, which probably won't go away when warmed up and could be much worse that a stuck injector.