[NSRCA-discussion] OS140RX Does not run

[Dennis Bodary]

With the nats fast approaching decided to install the new OS i had waiting for a new plane. Tried to get it running today. No deal. swapped fuel tanks still no deal. primed carb it would run for a second or so. Decided to install the backplate/pump assembly off the old engine still would'nt run. finally got tired of the 94 degree heat. installed old engine. using new backplate/pump assembly it ran very rich really would'nt stay running fuel pouring out the carb. But it did run. then i installed my old backplate/pump assembly to the old engine. now everything runs as it did last week. 
   
  Anyways now that you've read this far. the pump on the new backplate is about 1/8" past the backplate. my old pump is about flush with the backplate. 
   
  Has/Did OS switch the pumps to solve a problem. my new engine i have had for about a year and a half no telling how long it sat on the shelf before i purchased it. could have been days or years. Old engine i have had for about 2 1/2 years.
   
  Any help would be appreciated 
   
  Thanks
  Dennis

       
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