1. Rafi1959, Nov 9, 2013

   #1

   

   Rafi1959 New Member

   Joined:

   Nov 9, 2013

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   1

   Location:

   Israel

   Would anyone know reasons for why mercruse vortec 350 5.7 motor, model 1996, won't go higher then 2200 rev? Carborator and plugs are ok.
2. Capt J, Nov 9, 2013

   #2

   

   Capt J Senior Member

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   Jul 11, 2005

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   14,614

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   Fort Lauderdale

   Check fuel pressure. I believe those motors have 2 fuel pumps. If one goes bad it will have enough fuel supply to run at slower speeds, but not enough to supply the higher demand.
3. Fishtigua, Nov 9, 2013

   #3

   

   Fishtigua Senior Member

   Joined:

   Jul 20, 2007

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   2,935

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   Guernsey/Antigua

   If I remember correctly, each Hi-Pressure fuel pump for Vortecs are matched by engine serial number. It's not an off the shelf part, very specific to each motor.
   
   Best to check with a good Merc shop.

   Last edited: Nov 9, 2013

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