Mitsubishi FGC25N:
Nikki lp converter rebuild problem

I am having problem rebuilding the Nikki converter. When mine go bad they are letting high lp pressure go straight in to the air horn this is before the rebuild. I rebuild by replacing both digaphrams front and rear replacing the valve assembly and o ring, the 2 o rings on the bottom plate, o ring for outlet neck, o ring under 17 mm head plug on the top, both coolant port o rings. Out of my kit I have 2 o rings left and can not see as to where else they would be needed its a helmar kit I am using. Of corse I am cleaning as best as possible with brake wash. When I install onto unit it starts fine with no leaks or high Pressures going to air born but in about 2 seconds it starts to run rough and will not rev up at all. I have tried the adjustment screw on side and can only get it to idle or rev up properly one at a time depending on how far I turn in the adjustment. I just want to know if I am missing something with my 2 extra o rings from my kit or if anyone else has had this problem before. And it's not a problem with anything else I have switched parts from good unit to confirm that all the problem lies in the lp converter. Thanks
  • Posted 31 May 2012 03:32
  • Modified 31 May 2012 04:53 by poster
  • Discussion started by Bandit_
  • Ohio, United States
Showing items 1 - 2 of 2 results.
Found problem after taking apart for closer look. The clip for the sealing pad on the valve was not on properly causing a poor seal at valve
  • Posted 31 May 2012 08:10
  • Reply by Bandit_
  • Ohio, United States
to do a basic rebuild on the nikki all you really need to replace are the front and back diaphrams,the valve assy and oring. and the small diaphram under the vavle assy,that the little pintle sits on under the valve arm,the o ring kit you get comes with ALL the orings for the regualtor but rarely need to replace the water inlet/outlet o rings or the lp out oring.
  • Posted 31 May 2012 07:56
  • Reply by kevin_t
  • Pennsylvania, United States

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