1520 injectors

   / 1520 injectors #1  

skills4lou

Bronze Member
Joined
Aug 24, 2016
Messages
89
Location
Frenchtown, MT
Tractor
ih464
Hi all,
Wondering if anyone recommends cleaning fuel injectors vs replacing? Bud is a little hard to start and smokes for a few minutes. Planning to adjust valves and service everything before winter sets in.
 
   / 1520 injectors #2  
The average home owner does not posses the tools to clean an injector.. they smoke on start up normally because the nozzle/tip dribbles fuel into the engine cylinder after the engine is shut down..
The pintle & body need to be lapped together, the injector body & nozzle body need to be flat lapped & everything torqued to the proper spec, THEN the pressure needs to be reset on a "pop-tester".. & checked for leakage & spray pattern..
 
   / 1520 injectors #3  
Competent Diesel shop can check them out and rebuild if needed.

:thumbsup:
 
   / 1520 injectors #5  
No problem but I would rather check with a local shop first and keep the original factory injectors, assuming they have a reasonable solution.

As far as I recall mine were fixed for around $35 - 40 each few years ago.


Maybe the price has gone way up since but it's still worth checking?
 
   / 1520 injectors
  • Thread Starter
#6  
I have a couple diesel shops in the area, will go that route. Thanks guys.
 
   / 1520 injectors
  • Thread Starter
#7  
So after talking with local shop about symptoms, they recommended just running a heavier dose of silver bottle Power Service. Sending the injectors out would run $150-200, and replacements are only $60/ea, so I'm inclined to just go new if needed. I've been using the white bottle stuff already, but never used the "Diesel Kleen" version before. So I bought a jug and added a few ounces to the tank. Ran the tractor for an hour or so at ~2k rpm yesterday. I have a few projects to get finished up over the next few weeks, so I might be able to get through a tank.

I still need to get the new thermostat installed and adjust the valves.
 
   / 1520 injectors #8  
what color is the smoke at start up?
 
   / 1520 injectors
  • Thread Starter
#9  
Mostly white smoke, with a little blue for the first maybe 5 seconds. To me, that means a little oil burning off (probably valve seals) and unburned fuel.
 
   / 1520 injectors #10  
That痴 what I thought was going on with my 1620, after a compression test I found I had blowby and a rebuild was required. You may want to look into your smoke trail a little closer.
 

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