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rickmcd53

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Reply with quote  #16 
dadsdusky, Mead was referring to the "national average" of 50 hours per year. For a lot of us down south that's about a months worth of boating.
In our gulf coast dealership we see a lot of high hour engines but we also see many with just 10 hours per year.
Gotsea

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Reply with quote  #17 
DDusky, I had a similar problem 2 years ago while trolling at around 2,000rpms  and I had good water pressure showing, I did solved the problem by putting a different spring on the PRV, now it opens at 1700  rpm I see the temp moving from the 179/180s at 1,600 rpms  to the 165/7s and stays there
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1994 24 WA Baha
2008 300 HP DPXSC S/N 05228253
15 1/4 X 19 Mirage Plus 47 MPH top end @ 5,750 RPM
32 MPH cruising @ 12.5 g/h
 South Florida
dadsdusky

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Reply with quote  #18 
What spring did you use? Part #?
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2002 23' DUSKY FAC 2010 300 E-TEC
1980 18' Hewes Bonefisher 135 HO E-TEC
PhilH12

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Posts: 3,018
Reply with quote  #19 
Call Barnacle Bill's before he heads south for the winter.  Have your exact Model Number (off of the motor plate) in hand.

Also, this thread does give additional info, RE: Replacing Plunger, Seal, etc. as "wear items".

  https://www.etecownersgroup.com/post/prv-spring-swap-10169309?highlight=prv+spring&pid=1308890573  

Hope it helps!

Phil

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Always check the Easy Stuff First!
20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
Gotsea

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Reply with quote  #20 
Don't have a part # the spring was given to me (used) by a friend/dealer, other members here can probably tell you the apart #, what I can tell you is that it was definitive the spring, all I can think is that the inner cooling  walls passages of the engine with time gets thicker with incrustations of salt and other debris and takes more water flow to cool down at certain rpms just a wild shot. I use homemade salt  away every 3 or 4 outings, I have close to 600hrs on the engine. best of lucks  
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1994 24 WA Baha
2008 300 HP DPXSC S/N 05228253
15 1/4 X 19 Mirage Plus 47 MPH top end @ 5,750 RPM
32 MPH cruising @ 12.5 g/h
 South Florida
TeamShadow

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Posts: 83
Reply with quote  #21 
Mine is 2012 250 HO G1 3.4 L. I went with the 2006 spring and plunger. Joe at Barnacle Bills will know he helped me.
Huey

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Posts: 13,536
Reply with quote  #22 
+1 contact Joe and the P/N for the lighter spring from back in the early days of the 3.3L is 0348820.
steelhead

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Reply with quote  #23 
Since the overheat problem started AFTER recent WP replacement, do you have before and after water pressure readings from water pressure sensor.

If not, I would do a reseat on the impeller>shaft, impeller may be in wrong position on shaft or impeller wing flipped the wrong direction.  Detailed instructions in SM and water pump kit on adhesive sealing and gluing of cup to pump housing.  Lots of places to lose water pressure.

Install water pressure sensor with NMEA digital gauge and compare to jimh's chart for the 90d V6s.

Can also be plunger valve in PRV binding and sticking.  Wear item, also can be impinged by sand/seaweed
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