Surging on an LA175

   / Surging on an LA175
  • Thread Starter
#11  
Thanks tkcomer
 
   / Surging on an LA175 #12  
Oops, forgot about this. It was the vacuum line for the fuel pump.
 
   / Surging on an LA175
  • Thread Starter
#13  
I gotta go find this “vacuum line”. Sounds like my culprit. Thx.
 
   / Surging on an LA175
  • Thread Starter
#14  
Is this what you're referring to?
 

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   / Surging on an LA175 #15  
That looks different from mine but that one line with the elbow is the vacuum line.
 
   / Surging on an LA175 #16  
It's not a vacuum line, it is a pulse line.

The pulses from the crankcase cause the diaphragm in the pump to move back and forth and that action combined with a couple of check valves cause the fuel to be pump thru the part.
 

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