From: bobnospam@gmail.com   
      
   clare@snyder.on.ca wrote:   
   > On Sat, 21 Nov 2015 07:34:16 -0500, Vaughn Simon   
   >  wrote:   
   >   
   >> On 11/21/2015 1:57 AM, clare@snyder.on.ca wrote:   
   >>> I have a 7200/9000 watt Champion generator with a US Carb motor   
   >>> snorkel conversion that is not putting out anywhere near full power   
   >>> and is tricky to start. I suspect the pikot ajustment? is not   
   >>> correct (the spring adjustment screw under the plug above the fuel   
   >>> inlet on the Century zero regulator unit.   
   >>> Anyone know the best way to determine the proper adjustment? I know   
   >>> they are VERY fussy and turning the screw in makes it go lean. (more   
   >>> intake vacuum required to open the valve)   
   >>   
   >> Hopefully someone will come along with more experience than I.  But I   
   >> will try to get this conversation started   
   >>   
   >> You haven't mentioned trying the mixture adjustment, which should be   
   >> separate from the adjustment on the zero regulator.   
   >>   
   >> Very basic, is fuel pressure.  You should find the specification with   
   >> the conversion kit.  It is measured in inches of water.   You can   
   >> buy a gauge, or make your own manometer from some clear tubing and a   
   >> yardstick like I did.  You may find that your fuel pressure under   
   >> load goes too low.  That could be anything from a simple fuel   
   >> regulator adjustment, to the need for a larger (or more direct) fuel   
   >> supply line.  There should   
   >> be measurement ports for both the inlet and outlet of your zero   
   >> regulator.   
   >>   
   >> I have had the same zero regulator since my ancient Onan was factory   
   >> new, and don't remember ever adjusting it.  My mixture adjustment   
   >> however, is another matter.   
   >>   
   >> Vaughn   
   > The only "mixture adjustment" is the load block. Full range of   
   > adjustment there only made things worse, not better, as far as power   
   > output. The natural gas pressure is regulated by the utility - New   
   > meter and regulator installed this summer - all to spec. Same problem   
   > exists on Propane with regulator supplied by US Carburetor - and 2   
   > regulators behave exactly the same.   
   >   
   > 2 identical generators with the same issue. Run fine on Gasoline. If   
   > anything it acts like the generator is running too rich under full   
   > load - it loads up and takes time to clear after the load is removed   
   > (if I catch it before it dies)   
      
   I seem to remember reading that dual fuel generators run on natural gas or   
   propane do not produce as much power as on gasoline. That might be a subject to   
   research.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)