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  1. M

    low compression 3.0 cobra (new)

    If this has been verified with a different compression tester then I would say possibly valves.. Also I purchased a new compression tester from advance when I went to buy a boat because I left mine at home and it was 3 hours away the compression was 90 93 and so on. They were all within 5 psi...
  2. M

    low compression 3.0 cobra (new)

    Also I don't think it's been mentioned but if your exhust manifold is leaking you could be getting water in your cylinders and causing rust in the bores during winter lay-up
  3. M

    low compression 3.0 cobra (new)

    I'm not saying you're an idiot. What I am saying is there is absolutely no damage that can be done to the engine by running it with no water for a few minutes drag cars do it all the time. What I am saying is I've personally seen water pump impellers ( That are located in the lower drive...
  4. M

    low compression 3.0 cobra (new)

    Did they have the lower unit removed from the boat if so then letting it run without water would not hurt anything I would say it could run for several minutes like this. If the lower unit was still on the boat then just a few seconds could destroy the water pump in the lower unit
  5. M

    low compression 3.0 cobra (new)

    Not sure I understand this statement? Did they have water going to the engine while it was running?
  6. M

    1981 stringer drive leak

    Thanks have 1 on the way
  7. M

    low compression 3.0 cobra (new)

    Did you check the compression cold or with the engine warm?
  8. M

    low compression 3.0 cobra (new)

    No Reputable shop that I know would start an engine more less let it run without water . It would take time to run the engine hot and do damage without water but the water pump is fried
  9. M

    1981 stringer drive leak

    The Model number is in the 2nd post the number in the post above is the manual part number which I haven't been able to find I have the SELOC manual just not the OEM
  10. M

    1981 stringer drive leak

    I've had no luck finding one I do know it's part number 0982884 but as I said no luck finding it
  11. M

    1981 stringer drive leak

    Anyone have any experience with this drive ?
  12. M

    1981 stringer drive leak

    Sorry silly me Model number 200STHRCIS Serial number J 721033
  13. M

    1981 stringer drive leak

    I'm working on a 1981 stringer replacing the transom seal.. I noticed that when I loved the drive oil cam from the water intakes. Ive never worked on one of these drives but I'm assuming this is a seal in the water pump?
  14. M

    Stator problem

    The yellows should be for your alternator and the red and blue for your fire so test voltage with a DVA meter on red and blue disconnected from switch box if voltage is good test connected to switch box, if that shows good then test coming out of switch box. I would bet it's your switch box also...
  15. M

    Stator problem

    Looks like you have a 91 and up stator or an after market the Sierra stator for your engine has a red and blue that goes to the switch box and 2 yellows that go to the rectifier also the 91 and above stator has red blue and 2 yellows
  16. M

    Stator problem

    What's the serial number
  17. M

    Stator problem

    Nope you didn't miss it I just assumed ( my fault not yours) that he had a good battery... Don't stop trying to help you have been helping a lot long then I I'm just getting my feet wet at helping on the forum so some times I jump the gun
  18. M

    Stator problem

    I missed typed above and said disconnect black from switch box it should have read disconnect black/yellow form switch box
  19. M

    Stator problem

    So you have 2 blues , 2 reds ,yellows and a black correct.. if so test the stator between 2 blues and then the 2 reds also test each to ground / black. But before you do any of that disconnect the black/yellow from the switch box and see if you have fire the black/yellow is the kill fire wire...
  20. M

    Stator problem

    This engine should be alternator driven shouldn’t it?
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