3cyl Diesel Not 'Warming Up'

[TugBarge]

Or maybe,,,, he's tightening the valve cover enough to compress the top causing valve train to not function properly??? But then, you should hear the tappet banging on the cover......

You'd think you'd hear tappet noise, I completely agree. It's kind of a noisy engine, but from what I can tell, valve lash is correct.

 

[TugBarge]

Exhaust smoke at high idle.

I topped up coolant and I'm letting it idle while I drink tea... After a while I'll shut off and check coolant level. But I did check prior to running and it was full, and oil looked good.

Low idle burns pretty darn clean after warm up.

 

[George2615]

In the first post you stated diesel got into the oil. Has that contaminated oil and filter been changed yet? I'm not sure if that would make a difference on running.

 

[TugBarge]

In the first post you stated diesel got into the oil. Has that contaminated oil and filter been changed yet?

It has not. Oil was drained off to proper level.

I did not think of that as a possibility.

 

[WranglerX]

It has not. Oil was drained off to proper level.

I did not think of that as a possibility.

Not a really good procedure/practice to run oil contaminated with fuel.... You don't know if it is still thick enough to protect bearings....

 

[TugBarge]

Not a really good procedure/practice to run oil contaminated with fuel.... You don't know if it is still thick enough to protect bearings....

Makes sense. I will change that oil this afternoon, hopefully the 30 minutes of idle we have done hasn't caused any damage.

 

[TugBarge]

Okay. Replaced oil and filter, cleared up a lot of the exhaust (I'm guessing it was slightly over filled) except at high load ~2800-3000 rpm.
Still blows smoke.

Coolant and oil look fine, with no discernable contamination.

 

[TugBarge]

I'm curious if this could be caused by either injection pump timing (although this seems unlikely because nothing was changed there) or perhaps valve lash issues? I'm assuming the extra fuel at high load is causing an incomplete combustion situation. Though I don't know the remedy or diagnosis.

Maybe dirty injectors?

 

[ovrszd]

We still need to keep the KISS principle in mind Not mess with anything that hasn't been messed with.

If it's running okay, put a couple hours on the engine and see what changes. Everything may clean up. At least it's running okay isn't it? Running on all cylinders for example? Does it have normal HP? Pull a load, move around without stalling, etc.?

 

[ericm979]

The smoking was from diesel in the oil getting past the rings. It's a good thing that it wasn't enough to make it run away.

When it's idling poorly it's running on one cylinder. I don't know how the decompression works on that engine but I think that's a good lead.

 

[Hoss710]

seems as if all cylinders aren't firing. perhaps a bad injector?

 

[Hoss710]

Have you thought about removing the valve cover to see what's going on underneath? could be something under there . I remember seeing a video of someone adjusting the valves on a kodie . and remember him saying something about how tight to tighten the value cover. but can't remember why ? definitely get that oil changed. that diesel in the oil will wipe the bearings out. if you run it to much.

 

[K5lwq]

There is a decompression rod that runs right under the top of the valve cover. I am fairly sure that was the misfire. I do know if you over torque the valve cover it will crack. I gave a old one I had to another member because he cracked his. I also think it will clear up after the oil change and the exhaust clears. There is probably a lot of raw fuel in the muffler from the misfire.

 

[wfd2]

Let's start with the basics as I didn't see these posted yet.

When did this start happening?
After the last fill of Diesel? Bad fuel? Did you check the fuel filter? The water Separator?
What is the ambient temperature outside? Are the glow plugs working properly?

 

[Pepsiboy]

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.

In the video it sounds to me like it is only running on 1 cylinder. Another thing to check would be valve adjustment under the valve cover. If it can not breathe properly, it can not run properly.

Just my $.02 worth.

Dave

 

[guyrj33]

Check the fuel filter bowl for water.

 

[Tinhack]

I didn't read through all the comments, but did anyone mention a clogged air filter?

 

[Jimbo16720]

Sounds like the fuel isn't increasing when the throttle is increased. Shouldn't have nothing to do with temperature. Mine will rev up as soon as throttle is increased no matter how cold. Might be something blocking the fuel from getting to pump or injectors. You need air, fuel, and compression for a diesel engine to run.

 

[denchen]

By slacking and tightening that valve cover nut, the engine should not alter like it does. Something under that cover is not as it should be, I would take the cover off and have a look. Check the valve gap settings, I would not be suprised if one or more has come completly loose, and could be touching the cover.

 

[boatmoter]

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.

to start with I would crack open 1 injector at a time while it is idling. the cylinder that does not die down very much or not at all will be the problem cylinder. then remove that injector and have it tested and rebuilt if it has doesn't pass the testing. and on the cold running issue I agree with dstig1 on the thermostat stuck open. run the engine and keep your hand on the top radiator hose close to the engine, if the hose starts to get warm to the touch quickly then the stat is in open position and you need a thermostat and gasket.most diesel injectors are not bad to take apart and check to see if their plugged with dirt then cleaned.

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