Drzdude
Active Member
So I bought my first seadoo a month ago. 2003 gtx 4 tec non super charged with only 64 hours on it. It sat for over 2 years. So I drained the fuel and purchased refurbished fuel injectors. I changed the oil,oil filter and spark plugs. It statrs Right up and runs great. My first few minutes on the water i got H Temp. So i drained the old antifreeze and flushed out the coolant system. Also pulled the water pump housing and installed a 160 deg thermostat. Back on the water and now I can ride for a little while without having the high temp alarm. Btw no P codes show up when I get the alarm. I will get the alarm if I hold it wide open. So i flushed the coolant again and ran just plain water. Now it runs fine but as you can see its still getting hot up to 206 deg. I pulled the spark plugs today and it looks to be running very lean In my opinion. I don't think I should be running that hot especially with a 160° stat. I don’t see a oxygen sensor in the exhaust so I’m not sure what the ecm uses to monitor the air fuel ratio. I also removed the J pipe and checked the 3 small holes, they were good and i replaced the wear ring. When doing that i flushed all the exhaust cooling lines. Any help will be appreciated.
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