Just an update..BRP and the dealer have not been able to come up with a cause of our overheat problem. The engine report showed 120 overheats (combination of air/water temp) and 29 oil pressure codes. From these forums I feel it could be the thermostat spring. I'm not sure what else we can do but pick up the boat and hope for the best.
You may very well need a new pressure relief valve spring, not a thermostat spring. Your symptoms are indicative of a lack of water volume at cruise and a lower pressure spring will likely cure it!
So I did send the info to BRP.firstname.lastname@example.org to look into the pressure relief valve spring but they said the dealer would have to request. The dealer completed all the tests requested by BRP and they passed.
Should I request this part to be replaced at my own charge?
Is there a specific part number that I can refer them to? If BRP won't cover through my 7 year warranty, any idea of the cost of it? At this point I just don't want to have to keep taking it back to them.
Evinrude approves this spring change if needed
#5006465 -- 19# Blow OFF spring kit for any 60° E-TEC -- original spring is 22 psi
The kit is an assembly consisting of the diaphragm, plunger, and spring.
Sorry I have lots of information today. I did forget to mention that our lower unit did go out at the end of the season 2016. They said it was a manufacturer defect - broken into pieces inside the lower unit. I'm wondering if the cooling system should be flushed too.
Write an email to email@example.com and include the serial number, dealer name, and the engine's history.
We apologize that your engine problems have not been promptly corrected as they should be.