140L spitting fuel

[Larry Diamond]

Ken...

Try this link...You may also want to look around the YS forum...

http://www.rcuniverse.com/forum/140L_%22Air_Leaks_%26_Spiitting_Fuel_out_of_the_Carb%22/m_1878540/tm.htm

A quote from Dave Shadel:

"You will never completely stop the spitting out of the carb. There is a ton of valve overlap in these engines. It, unfortunately, is one of the prices you pay for the big horsepower."

Not sure how bad the problem is that your friend is having...

I know others will chime in with there expertise...


  ----- Original Message ----- 
  From: Ken Thompson III 
  To: discussion at nsrca.org 
  Sent: Wednesday, September 29, 2004 11:48 AM
  Subject: 140L spitting fuel


  A friend at my local field is flying a 140L in a pattern style plane.  He tells me that when the motor is running at about 1/4 throttle or below, it is spitting fuel from the carb.
  He pulled the motor and put it on a test stand where he tried to adjust both the pump and the low end needle to get rid of the problem.  I believe the carb was spitting fuel until the adjustments made the motor quit.

  Any ideas would be appreciated.

  Ken
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