YS 140L question

[Troy Newman]

air leak somewhere!  gaskets....valve cover, carb, reg gasket...throttle barrel seal...head gasket....something is leaking air. Sometimes its a small leak and doesn't affect performance much.....but look for leaking fuel in the engine compartment....A new set of gaskets would go a long way...could also be a o-ring...like on the pushrod tubes, maybe a intake tube O-ring....Usually these things are easy fixes.....but its leaking somewhere if that reg is not sealing.

Troy Newman
  ----- Original Message ----- 
  From: Chuck Czarnik 
  To: discussion at nsrca.org 
  Sent: Tuesday, April 06, 2004 6:18 PM
  Subject: YS 140L question


  Ok, for the YS Gurus out there..



  I have a 140L, runs good.  Fuel system has no leaks.  However, when I defuel, the pump sucks air bubbles in the fuel.  If I pinch the fuel line at the regulator, the pump primes and no more bubbles.  Regulator has a new diaphragm in it.  Engine doesn't appear to leak fuel anywhere when running.  Something to worry about?  What should I check?  Thanks in advance!  Chuck





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