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  1. makomark

    Thermostat parts

    Your engine serial number is ??
  2. makomark

    diffaculty finding replacment duratank gasket.

    If the holes and the cutouts on the new gasket match the housing, why won't it work? Looks like there may be some cracking in the housing gasket surfaces - hard to tell from the pic. The other thing to look for is warping, especially on the housing....
  3. makomark

    Oil pressure senders 88 350 king cobra

    could be sender...could also be something has become marginal in one of the harness connections. using the mechanical gauge would be prudent but doesn't isolate the sending unit as a potential cause of the flutter...
  4. makomark

    Carter Marine MC-988 Fuel Pump

    Thanks for closing the loop.
  5. makomark

    1988 See Ray flybridge not engaging reverse

    back a while, one used to have 5 posts before you could upload videos or images...separate forum for that. what is your drive train composed of? any idea whose controllers you have? single or dual station?
  6. makomark

    5.7 gxi fuel pressure issues

    Check the fitting to make sure the valve gets depressed...every once in a while I've seen it where things functioned but the gague showed a zero...and it was an interface issue. And yes, you really need to have the boat out on the water to get a meaningful assessment...until the engine is...
  7. makomark

    Mercruiser Alpha One 5.7 Litre Distributor Cap Question

    what has been shown should work fine...make sure you clean up any crud where the boots seal and apply a bit of silicone dielectric grease to the boots...
  8. makomark

    Water in Oil

    Leave the recirculation hose connected ...measure the hose nipple for the raw water inlet, gat a 3" piece of reinforced hose, and then plug the open end...you can use a copper cap or a pvc cap and a clamp..
  9. makomark

    Water in Oil

    You want to plug the recirculation an raw water in hoses?
  10. makomark

    Water in Oil

    If you want to isolate the exhaust manifolds, remove their hoses at the T-stat... Then just take a hose and connect to two outlets together...
  11. makomark

    Shifting to Neutral for starting

    maybe some CRC... shouldn't need a tool; just push the button and pull it out...
  12. makomark

    Shifting to Neutral for starting

    The whole handle
  13. makomark

    4.3 Mercruiser - randomly dies

    Its not the battery manufacturers, is usually the individuals rigging the boat...wings nuts are 'cheap & easy'. How many marine batteries have you seen, with the wing nut studs, that did not have an alternative connection method ???
  14. makomark

    4.3 Mercruiser - randomly dies

    Any repairs or new maintenance done in the past year?
  15. makomark

    Carter Marine MC-988 Fuel Pump

    Not likely to find a rebuild kit. Option one is to call the Carter's tech support line. If they can't help directly, they may be able to point you down a viable path. Option 2 is to call Lakeland auto and marine (port clinton, OH) and see if they can help...I know they have rebuilt old...
  16. makomark

    Are my props causing all my problems?

    not really, its done with the engine running and assesses the performance of the engine using a gauge connected to the intake.
  17. makomark

    1998 Silverton 372 454XL TB Fuel Cut

    Does the fuel pump stop running or does the engine just die from lack of fuel after the 60-90 minute run time? independent fuel tank for each engine or one shared tank?
  18. makomark

    Are my props causing all my problems?

    On your measurements, numbers with UNITS, go a long way to conveying the whole story... if its running, the coil is not likely to be the problem. "HEI with an ICM" is vague. Unless you use the boat a lot, you'll be better off with the factory setup, assuming its working. Know how the ignition...
  19. makomark

    Crusader 350 w/ Velvet Transmission: Locked up after brief shutdown

    I can't believe he's found a service center that isn't backed up for weeks... FWIW, I'd plan on changing the other damper plate-sooner rather than later...it likely won't be too far behind.
  20. makomark

    OMC 225 307 sea water pump

    the rubber vane impeller pumps can usually be reversed by inserting the impeller with the opposite rotation...that part is easy. getting the mounting (and adjustment) is usually the hard part...the hose routing can usually be adjusted. As to the flow rate required, you have to look at the...
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