Propeller for Islander 32 with Yanmar 2GM20F

[amelia]

We bent our 3-bladed prop on a reef and since have had it repaired. However, when installed it seems to cause black smoke from the engine on higher rpms. Could it be due to a change in pitch that the repair guy made? Prior to this we had no problem with the propeller.

[sailorchic34]

Originally Posted by amelia

We bent our 3-bladed prop on a reef and since have had it repaired. However, when installed it seems to cause black smoke from the engine on higher rpms. Could it be due to a change in pitch that the repair guy made? Prior to this we had no problem with the propeller.

It is very possible to get black smoke from too much pitch.

[Cap Stan]

Is there any vibration involved? If so ,could be that it wasn't done properly. Black smoke from a diesel usually indicates it isn't getting enough air.Check your air filter(s)

[westwinds]

Originally Posted by sailorchic34

It is very possible to get black smoke from too much pitch.

Most likely the cause, but you may want to check the injectors as a bad one can cause high cylinder wear. With greater pitch, a bad injector is more likely to smoke.