- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
I am not sure what you are calling gunk but if this gunk is black it is engine oil. The tractor and the engine was built by Yanmar. The injection pump is lubricated with oil pressure from the engine. The seals in the pump will leak and engine oil will get in the fuel system and contaminate the diesel fuel and plug the fuel. Seals will have to be replaced in the injection pump to correct the gunk.
There are 2 types of governors on diesels. one is controlled from the foot and is fixed speed at the foot setting. The other is variable speed which will run to high idle if the setting is not changed IE on start it will idle ok but if you use a fast setting on a hand throttle say to warm up the motor it will run to high idle. I suggest that if you have not had a problem before then you should have a diesel pump specialist look at it as there may be a fault in the governor control.
The puffs of smoke when you put the machine under a load make me think that your carburetor is loading up and needs to be adjusted. Adjust the fuel/air adjustment screws on the carb until it runs properly.
The motor has a governor that controls its speed, and if one of the pivoting parts or linkages is sticking this would happen. Look for the throttle linkage on the engine carburetor (move your throttle up and down, watch what moves). The governor will be a second linkage attached to the throttle arm. Squirt some WD-40 on any rotating parts and make sure a foreign object isn't stuck in there. It could also be the part of the governor that's internal to the engine -- harder to get at, but not expensive to fix.
345's have a habit of the choke sticking at the carb.Another problem they have is the fuel pump diaphram will crack and allow your engine to fill up with fuel,to much fuel in crankcase will end up past the rings when not running and smoke pretty bad when fired up.
×