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Old 02-23-2022, 11:36 AM   #9
Portage_Bay
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City: Coupeville Wa.
Vessel Name: Pacific Myst
Vessel Model: West Bay 4500
Join Date: Oct 2015
Posts: 2,415
If it ran fine before, no changes, assuming your mechanic checked fuel level in the tank, valves, primed the engines and checked for leaks leaks then your problem may be the fuel control solenoid. It is located on top of the fuel pump.

Are your engines energize to run or energize to stop? If they stop by tuning the key off they are energize to run. If you stop them by pushing a stop button they are energize to stop. Some marinized Cat 3208s are energize to run.

If energize to run:
  • Locate the fuel run solenoid on top of the fuel pump.
  • Have an accomplice turn the key to "run" not "start" then off again while you listen to the solenoid. Maybe even put your hand on it to determine if it is working.


If energize to stop:
  • Locate the fuel stop solenoid on top of the fuel pump.
  • With the key in the run position have your accomplice operate the stop button
  • As above listen and hand on the solenoid
  • Check the operation of the manual stop plunger on top of the solenoid.
Problems can be stuck solenoid, low or no voltage. i think there is a relay between the key or stop button and the solenoid. That may be faulty.

If your mechanic hasn't checked the solenoids then you haven't got a Cat 3208 experienced mechanic.


Edit: One more thing. If the solenoids are not working don't rule out the key switch and push to stop button.
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