JD 655 smokes no power

[jhobbie]

Hello all! I have a JD 655 compact. it is the 4x4 diesel. I inherited it a little over a year ago. It has around 1000hrs I believe. It has no power? When ever you put it under the least little load it tries to die and belches black smoke. When I first got it the air filter was very dirty. I replaced that, the fuel filter and changed the oil. It now starts up pretty good and idles smoothly. I have checke to be sure the intake tract is all clear. I assume I have a fuel problem but do not know how or what to check from here. Any help/ideas would be apreciated. Thanks

 

[Texasmark]

Might get some "snake oil" and chemically clean the injectors.....in the engine. Black smoke is unburned fuel and when the governor opens the fuel spiggot in the pump, rather than a mist it comes out in droplets and can't explode. I use Power Service Products. Also Sea Foam works. Keep it in my fuel and never have any problems with pumps or injectors.

Mark

 

[dex3361]

Check your air intake tube to see if it is restricted or collapsing under load. Black smoke indicates excess fuel and not enough air.

 

[jhobbie]

Thanks guys. I have checked the intake tube. all is clear. I will get some additive for the fuel. It looks like AGRI POWER is the one I should use?

 

[Blaneypark]

Agree with all above. That model may also have a water/fuel seperator on it If so change the filter in that. Firm believer in Seafoam and Power Service.

 

[rsallen]

Can you run it up to pto speed with no load?
Will it stay there with no problem?

 

[jhobbie]

yes it will run up to pto speed. it will run there ok until put under load. it will also power the belly mower ok but will load up if I come to an incline or go too fast.

 

[rsallen]

Does it have solid lifters or a hydraulic valve train?
My guess would be solid, check the valve adjustments perhaps they haven't been attended to and are too tight.

 

[buickanddeere]

Is the exhaust port or system plugged with soot?
The old decarboning trick with a mist of water sprayed direct into the intake manifold while the engine is a fast idle maybe a consideration. Spray a heavy enough mist to make the engine "labour".

 

[jhobbie]

not sure about the valve train? I'm sure it hasnt been adjusted though. Looks like I've got a few things to try. I will dig into it the next decent day that I have off! Thanks !!