KAMA 454 engine dies when warm...
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greg_g
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- JD3720 Cab, 300X loader with 4-in-1 bucket
When's the last time you changed your fuel filter and checked your pump oil?
//greg//
//greg//
doxford jim
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- 1959 MF-65 sold, 2007 Jinma 554 diesel.
Hi,
How many hours on your engine have you vere changed out the injector fuel pump oil?
Sounds like the injector fuel pump governor is sticking. Would be a good idea to drain injector fuel pump oil and replace with new diesel oil and then run engine for a short time to flush out the governor. Maybe do this a couple of times - each time draining the diesel into a container where it can be seen clearly. You will most likely find the diesel dirty to start with and then gradually clean up. Final fill use the recommended weight of engine oil - I have found either 15W40 or 30wt oil works just fine.
HTH
Jim.
I have around 200 hours and have not replaced the injector pump fluid. Sounds like this might be the place to start. I think there was a place on the forum that showed how to clean the pump. Ill check it out and let you guys know how it goes.
Thanks...
Thanks...
greg_g
Super Member
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Little drain plug on the underside, fill vent on top looks a bit like a mushroom. Fill level is determined by another plug on the side.
1. Remove bottom plug and drain
2. Replace bottom plug
3. Remove side plug
4. Remove fill/vent and add oil
5. Stop filling when oil comes out side
6. Replace side plug
7. Replace fill/vent
Should be done at least once a year, I do my own twice: spring and fall. Engine oil is fine, I use compressor oil myself.
//greg//
1. Remove bottom plug and drain
2. Replace bottom plug
3. Remove side plug
4. Remove fill/vent and add oil
5. Stop filling when oil comes out side
6. Replace side plug
7. Replace fill/vent
Should be done at least once a year, I do my own twice: spring and fall. Engine oil is fine, I use compressor oil myself.
//greg//
erj
Gold Member
Here is a picture of the injector pump on my 284 if that helps you.
RonJ
RonJ
bluechip
Veteran Member
I would try replacing the fuel feed lines to the injector pump, sometimes the inner layer of the hoses will collapse causing the engine to starve for fuel and stall. after the engine stalles, in a little while, the vacuum on the hose subsides and the hose opens up and lets fuel run... for a while... then it repeats. I have not seen this on a KAMA but a couple times on foton, but I'm sure it could happen to the kama as well...
I just cleaned out the injector pump with diesel and refilled with 30w ND oil. Still have the problem after about 30 minutes the tractor dies. Two hours later....starts right up. Seems like if I keep the same speed up its ok...Once I let off the accellerator and I accellerate again it just dies. As before several times it seems like it would almost over-rev on its own.....To kill the engine I pull the compression release and the choke (?).
I already replace many of the fuel lines..but ill look at that again. Could this issue be something with the govenor?
Thanks...
I already replace many of the fuel lines..but ill look at that again. Could this issue be something with the govenor?
Thanks...
Bob Rooks
Elite Member
Yes. Broken or weak buffer spring. This is something best left to a diesel shop.
It can happen to the best of them.
At work we have four Woodward 2301's w/ EG-3P actuators, and although I've been through the Woodward governor school, I still don't work on them.
doxford jim
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Have you checked to see if the small equalizing hole in the fuel tank cap is open? If is is plugged it might be causing similar problem to what you are getting through having a vacuum in the fuel tank?
Jim.
bjr
Veteran Member
I've posted this before, but I don't know if Jinma and Kama systems are the same. Get rid of that POS fuel valve on the bottom of the tank and put a regular 1/4" needle valve. Those OEM valves have very small and easily plugged orifices and don't let any fuel get to the pump. That was one of the very first Mods I did when I assembled my crate tractor. I'm surpised that there hasn't been anyone else notice how small those valve orifices are. bjr
Bob Rooks
Elite Member
Have you checked for diesel bugs, and that small sintered filter in the fuel tank connection?
Smalljobs
Gold Member
Is there a way to measure fuel pressure when "normal" and then again around the time when it begins to quit?
Bob Rooks
Elite Member
Yes. You can purchase a digital min-max pressure gauge complete with sending unit for around $450.00. Check the Omega Pressure catalogue for your choice.
Or, you can install a dash mounted Murphy Switchgage and wire it for a light or buzzer for close on rise or close on fall (you pick the setpoints). About $85.00.
Or, you can just install a simple dash mounted pressure gauge like an oil pressure gauge, and just keep your eye on it. About $25.00.
Or, you can install a dash mounted Murphy Switchgage and wire it for a light or buzzer for close on rise or close on fall (you pick the setpoints). About $85.00.
Or, you can just install a simple dash mounted pressure gauge like an oil pressure gauge, and just keep your eye on it. About $25.00.
Ive checked the fuel bowl under the tank and its full.....as well as the upgraded fuel filter that is inline with the bowl and the injector pump. When it dies next time, Ill pull one of the injector lines and see if fuel is coming out of the pump. I thought I tried this before, but dont remember the results. I also have tried priming it when it dies and doesnt do anything. Seems temp related. Double checking and will most likley just replace all the fuel lines again. Thanks...
Diamondpilot
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What is this upgraded filter? If you have fine filter prior to the injector pump and are relying on gravity from the tank to keep it full? That may be your problem right there. I could see the filter going dry then refilling via gravity while you fiddle with it then the whole process happening all over again.
At this point its very important to tell us the whole story? Why the upgraded filter? Not just you but a lot of the time we get bits and pieces and then we find out "oh yea I just did _________" and now it will not run. All this after 2 weeks and 45 post later.
Chris
At this point its very important to tell us the whole story? Why the upgraded filter? Not just you but a lot of the time we get bits and pieces and then we find out "oh yea I just did _________" and now it will not run. All this after 2 weeks and 45 post later.
Chris
Bob Rooks
Elite Member
Chris is right.
In fact, you can run completely out of fuel and the sediment bowl will still appear to be full. If you checked your fuel lines once then they are still probably OK.
I had similar symptoms, see here: Chinese Tractor Owners Association - CTOA Forums - Tractor/Dozer Engines - TY395 engine stalls.
In fact, you can run completely out of fuel and the sediment bowl will still appear to be full. If you checked your fuel lines once then they are still probably OK.
I had similar symptoms, see here: Chinese Tractor Owners Association - CTOA Forums - Tractor/Dozer Engines - TY395 engine stalls.
Diamondpilot
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Take that filter out of the loop for a test run. Should be easy to do since its just using hoses and clamps. I have a gut feeling that is the problem right there. Maybe the filter is full of bugs or something like Bob said.
Sorry if I came off harsh before but my goal is jut to get your machine running.
One other thought is when you have the hoses off to bypass the filter make sure they are clear and not soft inside. Many hoses are not rated for diesel and especially a bio mix. They will soften and gum up the works.
I also don't like how the hose from the filter to the pump is routed. It runs lower than the filter then back up to the pump requiring it to suck fuel. I has been doing all right but the system is designed to run by good old gravity and the way that hose is ran and the position of the filter may be causing problems also. Have you simply tried filling the tank up 100%? I worked on a Case Dozer for a neighbor that had the same symptom and I guess the injector pump was getting weak and when he was working on a incline it could not pull fuel up hill. By filling the tank it would work fine. I guess the extra push from the larger head of fuel gave it the pressure needed. Ended up putting a cheap $20 electric fuel pump on it right at the tank which is mounted behind the operators seat to push fuel to the injector pump.
Chris
Sorry if I came off harsh before but my goal is jut to get your machine running.
One other thought is when you have the hoses off to bypass the filter make sure they are clear and not soft inside. Many hoses are not rated for diesel and especially a bio mix. They will soften and gum up the works.
I also don't like how the hose from the filter to the pump is routed. It runs lower than the filter then back up to the pump requiring it to suck fuel. I has been doing all right but the system is designed to run by good old gravity and the way that hose is ran and the position of the filter may be causing problems also. Have you simply tried filling the tank up 100%? I worked on a Case Dozer for a neighbor that had the same symptom and I guess the injector pump was getting weak and when he was working on a incline it could not pull fuel up hill. By filling the tank it would work fine. I guess the extra push from the larger head of fuel gave it the pressure needed. Ended up putting a cheap $20 electric fuel pump on it right at the tank which is mounted behind the operators seat to push fuel to the injector pump.
Chris
