Injection Pump Flush? - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• Injection Pump Flush? by Spokerider on 07 Jul, 2008 08:59
• The IP that came with my aaz has been removed and sitting in a box along with other engine parts for the last three years. The previous owner did not cover the fittings where the fuel lines connect, or any other ports leading into the pumps internals..........
  
  I'm going to be bolting it back onto the engine soon and am concerned that grunge may have forund it's way into the pump just from sitting in a dusty shop. Anyone "flushed" an injection pump? I'm wondering if injecting clean diesel via a large syringe into the fuel inlet and letting it flush out the 4 holes would be ? a good idea? Maybe blow some compressed air through the fuel inlet to move the old fuel through?
  
  I don't want to tear into this thing  :roll:
  
  Cleaning the outside of the IP? After reading the brake-cleaner thread, I'm thinking of useing a water-based cleaner like Simple Green or other detergent type solvent. Thoughts?
  
  Thanks!
• #1 by gigaz2 on 07 Jul, 2008 09:09
• you could run it with no injectors for a while, but a good rebuild would be way better.
• #2 by Fisher on 07 Jul, 2008 15:06
• Use ATF to flush it out.
• #3 by burn_your_money on 07 Jul, 2008 17:35
• you won't be able to get rust out. If it's been sitting dry there is a good chance it is rusted inside. Look at the ends of the delivery valves, and take out the in and out banjo bolts and have a look in there for signs of rust. You could take off the advance covers and have a look as well. That should give you a pretty good idea.
• #4 by jtanguay on 07 Jul, 2008 17:41
• Quote from: "burn_your_money"

  you won't be able to get rust out. If it's been sitting dry there is a good chance it is rusted inside. Look at the ends of the delivery valves, and take out the in and out banjo bolts and have a look in there for signs of rust. You could take off the advance covers and have a look as well. That should give you a pretty good idea.

  
  
  1x.
  
  i wouldn't trust a pump that has been sitting for too long without the holes blocked...  especially being in BC where things rust as fast or even faster than in my garage  :lol:
• #5 by Op-Ivy on 07 Jul, 2008 20:19
• Quote from: "jtanguay"

  Quote from: "burn_your_money"

  you won't be able to get rust out. If it's been sitting dry there is a good chance it is rusted inside. Look at the ends of the delivery valves, and take out the in and out banjo bolts and have a look in there for signs of rust. You could take off the advance covers and have a look as well. That should give you a pretty good idea.

  
  
  1x.
  
  i wouldn't trust a pump that has been sitting for too long without the holes blocked...  especially being in BC where things rust as fast or even faster than in my garage  :lol:

  
  
  Agreed. Theres no way to get it cleaned out properly without taking it apart. I would just bite the bullet and at least take a peak inside.