Strip down the AAZ pump and gov mod tuning - page 2 - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• #15 by Les on 21 Sep, 2009 17:26
• Where is the smoke screw on this pump?
  
  
• #16 by Rabbit on Roids on 21 Sep, 2009 19:16
• on the back of the pump.
• #17 by 4wheeler on 21 Sep, 2009 20:22
• The intermediate spring is nothing more then a buffer for a smooth transition between idle spring and main spring.??
  Thats what my thoughts are on the whole subject.
  Thus making sense to leave the intermediate spring alone and shim the main spring only.
• #18 by flusted on 22 Sep, 2009 07:11
• The modded pump in the pics is my pump.
  Recently fitted it and it runs fine and goes very well.
  Revs seem to hold ever so slightly on gearchange but unsure if that a TD characteristic as never had a TD before?
  Very happy with performance
• #19 by regcheeseman on 23 Sep, 2009 02:58
• thanks for that!
  
  You tried that screw I suggested? It'll increase the force closing the throttle down. 
• #20 by Andy@React on 07 Oct, 2009 11:05
• just to add to what i said earlier as i have recently got my caddy (with its newly fitted AAZ engine with a GTD pump modded by regcheeseman) back on the road, it revs up like a good 'un, doesnt hang at all - waaay better than when it was standard!
  
  here is a quick vid before i put an exhaust on it
  
  http://www.youtube.com/watch?v=MgxCKUpxV3w
  
  i give it a few stabs on the throttle at the end, no hanging, no problem!