3cyl Diesel Not 'Warming Up'

[TugBarge]

Hi all,

You all helped myself and my neighbor diagnose a problem with his Kioti LB1914 several months ago.

Another problem came up with the machine, I have a video of the issue.

He said it started to take a while for the engine to warm up, clear out the smoke and have any throttle response, and eventually, just stopped warming up at all.

I went over there and helped him swap a lift pump, and I discovered the oil was filling up with diesel. That fixed that issue, but still having the warm up issue.

Injectors are $250-300/ea and an injection pump is $1300, so I'm hoping to narrow down the issue.

What do y'all think?

I appreciate any help. Thank you.

 

[dstig1]

Thermostat? Water pump? Those would be the things I look at first with an engine not getting up to temp... Tstat stuck open will do it.

 

[ovrszd]

In the video, it won't rev up??

 

[TugBarge]

Thermostat? Water pump? Those would be the things I look at first with an engine not getting up to temp... Tstat stuck open will do it.

Good ideas.

Perhaps 'warming up' is the wrong way to word it. The temperature will increase, but the fuel system will not clear up and run smoothly. I have heard that injectors need to warm up to operate effectively.

 

[TugBarge]

In the video, it won't rev up??

Exactly. No throttle response, it just never clears out.

 

[dstig1]

Ah. I did not watch the video, just went on what you said "not warming up"...

 

[TugBarge]

Ah. I did not watch the video, just went on what you said "not warming up"...

Yeah, my bad on the wording there.

 

[ovrszd]

Exactly. No throttle response, it just never clears out.

K.I.S.S. principle, did you ensure the hand throttle is moving the throttle plate on the injector pump? Moving the throttle lever causes movement at the pump?

What type of shutoff system does it have? Mechanical knob that you pull to shut it off? Or electrical shutoff with the key?

 

[TugBarge]

K.I.S.S. principle, did you ensure the hand throttle is moving the throttle plate on the injector pump? Moving the throttle lever causes movement at the pump?

What type of shutoff system does it have? Mechanical knob that you pull to shut it off? Or electrical shutoff with the key?

I did, it does move the throttle plate.
Mechanical knob shut off that has a linkage that connects to the same plate as the throttle linkage.

I have to keep the throttle up to keep it idling... Another detail to consider. But you can't really tell the throttle is up, but without it raised it runs for less than 30 seconds.

Also, there is no load whatsoever, clutch pedal is locked down, it does not continue to run for as long if clutch pedal is released.

Thank you

 

[rScotty]

Does it have a temperature gauge on the dash that reads out in degrees? If not, consider going down to the Car Parts or Amazon and get a gauge kit. Then at least you will know if your changes are making a difference. I did that to mine. Came with everything including the right brass thread adapters for a metric engine, and cost less than $40. Mounted mine with two screws to the bottom of the dash.

Then take a piece of cardboard and block off half or more of the flow through the radiator - do that from the front of the radiator and it should heat up if it is going to....regardless of whether the thermostat is stuck. And it's usually the thermostat....

rScotty