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    1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Suspect False Overheat Warnings

    1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Suspect False Overheat Warnings Getting various warning beeps. Usually the long beep that is an overheat. (See other posts…continuing saga). Replaced the impeller - no signs of overheat, despite several past overheat warnings. Strong flow out the...
  2. M

    Thermostat Location on 1996 Mercury 2 stroke/ 4 cyl C40ELPTO

    1996 Mercury 2 stroke/ 4 cyl C40ELPTO I have the $75 OEM repair manual. Nothing on the thermostat that I can find. Where is it on the motor? Is it under the huge ignition module?
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    MERCURY 40 ELPTO - Long Beep

    Thank you. Impeller and housing looks good but going to replace it. Next going to look at thermostat. Problem is I cannot find it.
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    Overheat Beep

    1996 Mercury 2 stroke/ 4 cyl C40ELPTO I got the overheat beep on a motor I just bought. Got it a few weeks ago after running the motor for about 45 minutes. Discovered a leaking fuel pump. Was told the leaking fuel pump might cause the overheat. Rebuilt the fuel pump - works good, no leak...
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    MERCURY 40 ELPTO - Long Beep

    Bought the OEM Mercury Manual - thank you!. I know the long beep is an overheat. The manual says nothing about troubleshooting an overheat. If it does - I cannot find it.
  6. M

    MERCURY 40 ELPTO - Long Beep

    1996 Mercury 2 stroke/ 4 cyl C40ELPTO serial number: 0G368744 (MERCURY 40 ELPTO). Well, boat runs great with new fuel pump rebuild. I was hoping it would get rid of the long alarm, I was told, could, be due to the old fuel pump leaking. Wife ran it for 1hr 10min and then, the long alarm went...
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    1996 Mercury 40 2 stroke/ 4 cyl C40ELPTO - Fuel Pump

    Thank you!
  8. M

    1996 Mercury 40 2 stroke/ 4 cyl C40ELPTO - Fuel Pump

    The fuel pump in the photo needs to be rebuilt or a new pump - model # 8M0036779. Please note the impulse connection is plugged. Bought it this way and it ran great..still runs. Leaks a very small amount of fuel though - so it is going. Over on the FB forum I am told, or understand, there is...
  9. M

    Mercruiser Started - Now Won't

    I went out to get my 1997 Maxum (5.7L EFI) at my outer dock. I idled it to my home dock - 5 minutes. As I idled (only idled) to my home dock a crackly horn began to sound - hot water or low oil press. Motor, though never got hot. OP was good - oil clean new and full. Shut down. Added oil on the...
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