White smoke. Any ideas?

   / White smoke. Any ideas? #1  

Blue76

New member
Joined
Feb 29, 2020
Messages
7
Tractor
Yanmar 2500; kubota 3600
Here is a YouTube video of it running.

Just installed new pump and rebuilt injectors. Starts easily but that smoke...

YouTube

Greg
 
   / White smoke. Any ideas? #2  
I didn't watch the video but white smoke can be an indicator of water or other contaminates in the fuel (coolant etc.)...white smokes means the fuel is not burning hot enough...
 
   / White smoke. Any ideas? #3  
Is the engine surging on its own like that or are you revving it up and down?
 
   / White smoke. Any ideas? #4  
Head gasket leak in one of the three cylinders - but what were the symptoms that drove the pump and injector replacement?
 
   / White smoke. Any ideas?
  • Thread Starter
#6  
The tractor was abandoned on some property I bought. Been sitting somewhere around 6-8 years. Fuel pump was locked down and injectors gummed up.

Engine was surging on its on. I wasn’t doing anything.

It has clean fuel but I did put a diesel additive in it. Maybe too much for the small tank. May drain that out and refill with diesel only.

Greg
 
   / White smoke. Any ideas? #7  
Unless you've completely drained the tank and changed the filters, it likely has water in the tank. Adding clean fuel will not remove the water problem.
 
   / White smoke. Any ideas?
  • Thread Starter
#8  
I drained the tank. Washed it out. Rinsed it with diesel and let it dry. Installed new filter and new fuel lines.
 
   / White smoke. Any ideas?
  • Thread Starter
#10  
Copied from my post at Hoye tractors forum...

Well. After our online Easter service. I decided to pull the exhaust manifold. Smoke was coming from the #2 cylinder pretty good. #1 was clean and #3 slight smoke. So... for kicks I swapped the injectors around... now smoke from #1 and #2 but #3 is clear. Seems one injector is working better than the others but it doesn’t clear up the #2 cylinder. #2 has unburnt fuel coming out of the exhaust port.

The pump is new from Hoye. I used factory shims. Wondering if it is shimmed correctly for this pump?

I like tinkering but I am ready to move on to other parts of the tractor.

Greg
 

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