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  1. R

    CDI Electronics and AGM Battery Compatibility

    The ignition on that engine does not use 12 volts from the battery to make spark.
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    Dead cylinder after carb cleaning on 55EL78S

    Take motor apart.----Inspect all parts.----Bore engine and fit O/S pistons at $100 each.
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    2001 70HP Johnson 2 Stroke.

    Good luck with the motor.----Usually the VRO plug for the " no oil alarm " is disconnected .----All that needs to be done.----Have you removed the pulse limiter ?---Part # of the replacement fuel pump ?
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    Dead cylinder after carb cleaning on 55EL78S

    Blown head gasket or rebuild time.----Simple as that.
  5. R

    2001 70HP Johnson 2 Stroke.

    Looked at the water pump impeller ?
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    70HP Johnson 3 Cylinder 2 Stroke Bogs Down

    " Good compression " means nothing to me , post the actual values.----Run with a timing light one cylinder at a time.----Might help determine if spark is lost on 1 cylinder.----Remove cover in front of carburetors.----Shine a STRONG flashlight into each carburetor bore.----Compare amount of fuel...
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    Dead cylinder after carb cleaning on 55EL78S

    Does spark jump a gap of 3/8" or more on both leads , yes or no.-----Those inline test lights can mislead you.---You should see 140+ PSI on a good motor.
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    1969 85hp starflite, low power and cutting in and out

    The original pump housing was cast aluminum.---I do not believe they market kits for these.---Your local dealer can find the parts for you.
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    1969 85hp starflite, low power and cutting in and out

    There was no issue with that choke system not working as designed !----It is a fact that people / owners did not understand how it worked.----Lot of smoke at startup.----And most people think that there must be something wrong if they see a lot of smoke.-----Even when new you had to use the...
  10. R

    150 mercury black max

    Finde the serial # or post pictures if decals are original.-----The number you posted is a part # and no help to determine the year !
  11. R

    1969 85hp starflite, low power and cutting in and out

    That is correct.-----The fact is that most folks ( perhaps not you ) do not understand how things work.-----Factory attempted to make choke more " automatic " for novices.----Today cars / outboards have a computer that has taken the human factor out of starting / operating engines.----So if the...
  12. R

    1973 4hp Evinrude

    There are numerous videos on how to set the points ( timing ) using the timing marks and an ohmmeter.----There is a timing tool that can be used.----A factory / shop time saver.----But you can use the timing marks on the flywheel and magneto plate as well.-----Learn about the timing on these...
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    1977 Evinrude 85hp - Intermittent power loss

    Replace boots on plug wires.-----Or test run with a timing light 1 cylinder at a time.-----Might help pinpoint the problem cylinder.
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    1978 Johnson 150 hp tach wire

    I think he is referring to the 2 powerpacks as " control boxes "
  15. R

    1973 4hp Evinrude

    I do not believe a " knock sensor " can be fitted on a 1973 4 HP !!!-----Who are these clowns suggesting that ?
  16. R

    1978 Johnson 150 hp tach wire

    There are 2 powerpacks on the motor.-----Look into the control box at the helm.-----Might find a gray wire there.-----The factory tachometer operates with alternator pulses.
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    Dead cylinder after carb cleaning on 55EL78S

    Does spark jump a gap of at least 3/8" on a test device ?------Is the high speed jet in the very bottom of the float bowl clean ?
  18. R

    1969 85hp starflite, low power and cutting in and out

    Run with a timing light ( 1 cylinder at a time ) and see how spark behaves when motor falters.
  19. R

    Can someone help me, what is this

    ??---Post picture of the speedometer tube that you see.
  20. R

    Can someone help me, what is this

    See post #2 ----Or is that nonsense ?
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