Okay, so I had a temperature spike recently and could use your help diagnosing the problem. I got this spike when going at idle speed. I immediately turned off the engine and notice a loss of coolant. Maybe about 1/2 to 3/4 gallons. I figured it must be an impeller since it I got the spike at idle speeds.
So, I check the sea strainer and nothing there. I removed the impeller and it looks like new. I topped off the coolant and tried again. The temp came back down and stayed at normal operating temperature of 185 degrees. The problem is now that I can't get that engine above 3,100 RPMs or so.
I have since run the boat a week and two later and the temp stays right where it should with no further loss of coolant. Would there be a fault stored in the EVC keeping the RPMs lower than WOT? I would assume if there was it would keep the RPMs much lower like 2,000. So, what are your thoughts?
I would hate to think I have a head gasket issue and, if so, what sort of symptoms would I see? Thanks for your help as I am really at a loss here.
So, I check the sea strainer and nothing there. I removed the impeller and it looks like new. I topped off the coolant and tried again. The temp came back down and stayed at normal operating temperature of 185 degrees. The problem is now that I can't get that engine above 3,100 RPMs or so.
I have since run the boat a week and two later and the temp stays right where it should with no further loss of coolant. Would there be a fault stored in the EVC keeping the RPMs lower than WOT? I would assume if there was it would keep the RPMs much lower like 2,000. So, what are your thoughts?
I would hate to think I have a head gasket issue and, if so, what sort of symptoms would I see? Thanks for your help as I am really at a loss here.