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  1. Chapparall280

    Overheating motor

    Ok thanks on both suggestions will check again
  2. Chapparall280

    Overheating motor

    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.
  3. Chapparall280

    Overheating motor

    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 170 160 170 155 170 150 175 175
  4. Chapparall280

    Overheating motor

    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...
  5. Chapparall280

    Overheating motor

    : 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...
  6. Chapparall280

    Overheating motor

  7. Chapparall280

    Overheating motor

    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...
  8. Chapparall280

    Overheating motor

    Ok thanks
  9. Chapparall280

    Overheating motor

    Also u happen to know size of the clear hose and connections I need if go to hardware store
  10. Chapparall280

    Overheating motor

    This is fourth summer with boat. First time having this issue.
  11. Chapparall280

    Overheating motor

    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 )
  12. Chapparall280

    Overheating motor

    I will repeat the test this weekend and see if more flow
  13. Chapparall280

    Overheating motor

    I will note that water test was before I put a new impeller and housing on yesterday
  14. Chapparall280

    Overheating motor

    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.
  15. Chapparall280

    Overheating motor

    See attached
  16. Chapparall280

    Overheating motor

    0m328896 Yes will try to install the clear line and see if their are air bubbles. Will bubbles be obvious in the line. ?? I did take the line off and pointed it into a bucket seemed like good water flow. Of course was at low rpm now high since wouldn't want to run it with no water...
  17. Chapparall280

    Overheating motor

    First let thank anyone for the help. I have a 2002 Chaparrall 280 with a mercruiser 5.0 and alpha one gen 2 drives. It's a carb motor and has approx 600 hours. I have what appears to be an overheating issue. The alarm sounds and my temp gauge acts a bit odd during this time. Goes from 160...
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