What Is Normal Riser Back Pressure

BILL INGRAHAM

Seaman
Joined
Jul 7, 2009
Messages
52
2000 Vp 5.0 Gi With Heat Exchanger-when I Remove Small Pipe Plug To Water Jacket At Riser I Get What Feels Like Exhaust Pulses. Is This Normal? Lately Risers Getting Hotter And I Thought Maybe My Impeller Cannot Over Come This Pressure. Any Help Would Be Appreciated.
 
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