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2012-03-08 Leakdown Testing

dcarver's picture
published by dcarver on Fri, 03/09/2012 - 16:04
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2006 Yamaha FJR1300 - KrZy8

 

These numbers taken with a cold engine that had been sitting inside a metal building for 8 months. 

I'm pretty happy with them! 

Testing technique :

  1. Set inlet reg to 20 psi
  2. Rotate crank until outlet reg registers max reading
  3. Increase inlet press to 80 psig while holding crank with breaker bar to prevent piston movement
  4. Read and record
Cyl Inlet Reg Diff % Leak
1 80 79 -1 1.3
2 80 78.5 -1.5 1.9
3 80 77.5 -2.5 3.1
4 80 79.5 -0.5 0.6
         
1 80 79.5 -0.5 0.6
2 80 78.5 -1.5 1.9
3 80 79 -1 1.3
4 80 79.5 -0.5 0.6

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