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removing injectors from diesel engine

M

Mtjohnso

Member
Have a Mitsubishi Satoh Buck with the Mitsubishi K3B engine. Has a miss while running, hard starting and white smoke coming from the muffler. Was going to remove the injectors and take them in for testing. On this engine there is a plate that goes across the injector with a bolt on either side holding it in place.
After removing the 2 bolts and the fuel line going to the injector and the return line, I thought I would be able to just pop them out.
I have swiveled one back and forth a little but no upper movement. Since this is my first time removing the injectors, I want to be careful and not damage them.
Any guidance on removing the injectors. I would assume that they are the same across the industry.
BTW injectors are mfg by Nippon Denso.
 
i don't know but i'll be glad when someone answers. my mf has miss till it warms up and i want to take them out and check and clean them. utube has a video that shows you how to check and clean them. good luck. :)
 
A shop manual sure would help! For some engines, you use the threaded hole at the top for the "banjo" return fitting and thread in the appropriate slide hammer and yank them out.

On other engines, they get carefully pried and wiggled out with a little crow"s foot pry bar or two.

That"s what you are faced with unless someone has some better, specific instructions for that engine.

Some "loosen juice" can"t hurt either.
 
Once those two bolts are out there's nothing holding the injector assembly in there but corrosion. I.e. it is just stuck. Very simple setup almost the same as the John Deere 1010s and 2010s used back in the 60s. Injector often get stuck in any sort of head over time.
a163207.jpg
 
White smoke, hard starting may not be injectors, but low engine compression. White smoke means fuel is getting into the chamber, but not enough heat from compression to burn. If the smoke clears on warmup that would point to compression and/or timing. If just one is causing the smoke you can find it by loostening the fuel line on each injector, if smoke stops when fuel is taken away that is the suspect cylinder. I have a TO-35 23C engine, after it was overhauled the blueish white smoke cleared. When I got it years ago it ran really bad cold due to low compression, old pistons and rings were shot.
 
It never hurts to get the injectors tested, but I would run a compression test while you have them out.
 
along with others knowledge someone by now should have suggested a cocktail , of carb cleaner , pb blaster , brake parts cleaner ,wd-40 .. that's what it took to get them out of my case 430
 
I had a couple of tractors with that Standard 23C taxi-cab engine. Both in Allis Chalmers ED40 farm tractors. 30 years ago I couldn't even find a place to buy a new head-gasket. Not from AC and not from Massey Ferguson. Now with the Net, I see parts for sale all over the place.
 
The compression in the manual for this engine states 485 psi. I measured 440 in two outer cylinders and 400 in center cylinder. The manual gives no indication of how to remove injectors. I see tools for sale for injector removal not sure if there is one for these. It sounds like from everyone's input that there is not.
Will spray some PB Blaster around the base and see if things will loosen up.
 
CRS has set in since I removed the injectors from the Perkins diesel in my old Super 90 Massey and I can't remember any special problems. . But I guess it could not have been too difficult or I would remember it. They did not need any work but needed to come out so I could get the head planed smooth for the new gasket.
 
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