Video attached regarding water flow. One idle. Looks what appears normal. One 1500 rpm. Also somewhat normal. One 2000 rpm basically have water flow stopping. These are all while at the dock not moving.
first thanks again. So update. Compression is as follows
plugs order 1-4 from front port to back and 5-8 starboard front to back
So that appears good
170
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yes I will do compression check.
Just to clairify If I am seeing air when pulling the hose from thermostat that is fed from the drive I was thinking it would not have made its way to the engine so the air would not be from a potentially blown head gasket since the air came before the line...
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I am def getting air in the line. Without even taking the boat out I could see air in the line when rpm taken to approx 2000 or little over. When backed down to idle still had mostly air but when bumped to 1500 rpm had consistent water flow. When went up again large amounts of air not just...
I am open to odd thoughts. And yes has dometic with hot water tank with feeds from top motor. Unfortunately that's not the motor with the problem. As I was reading I was like yes yes and yes but then of course realized it's on the other motor but thanks for the idea. Def a place to check...
Ok thanks on flow. So we think flow is ok at least at idle
Yes I did peak a camera in there and again having no expertise it looked like the flaps were good to me ( see attached )
Yes I did place a garden hose on the line disconnected from Thermastadt that runs to drive and water seemed to flow thru it Of course based upon flow coming in Think a garden hose produces less water flow.