Suzuki DF15A over heat gradient

[DavidV324]

Hello, I’ve had this outboard for almost 5 years since I purchased new in October of 2020. It’s been kept up to service yearly and flushed extremely well after every use with only 116 hours . Ever since about a month ago it’s been throwing the red light and goes into limp home mode . I’ve read lots of threads of it being the water jackets clogged and mechanic told me it needs to be descaled . First I replaced the whole water pump system new , replaced the thermostat, anodes , oil filter , engine oil (full 100hr service) I checked the temp sensor as well . Water is circulating well through the water pump as the tale telI is strong . I purchased rydlyme and hooked up a submersible pump with the lower unit removed through the water pick up under 5 gallon bucket and let it recirculate for hours as it cleaned a lot of stuff from the inside thinking my problem would be solved (I removed thermostat during the descale), I purchased SDS cable and the engine isn’t showing any failure codes . Engine is still going into limp after all this and showing as an over heat gradient on the computer . Anyone ever come across this issue or are these engines just junk ? I’ve tried just about everything I can before taking it back to mechanic or having to disassemble the block / power head . Anything helps at this point I’m stumped . Thanks !

 

[stickerbush]

With red light and limp home mode there should be warnings stored in the SDS system. It would be in the "Caution Sys. Info" area of the Service Data Window. It took me a while to find this, it's not particularly intuitive.