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  1. R

    1970 Evinrude 18hp Trottle issue

    The head is warped.----Resurface it on a piece of glass and emery paper.----Install new head gasket.----Test run.
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    Impeller change level of difficulty Q

    Important to put a new impeller in every 5 years.
  3. R

    1970 Evinrude 18hp Trottle issue

    You are now starting to overthink the simple procedures of trouble shooting this motor !
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    1971 9.8 110 driveshaft removal

    Correct.
  5. R

    1970 Evinrude 18hp Trottle issue

    I think you have a bad compression tester or a leaking head gasket.----Remove cylinder head.
  6. R

    1970 Evinrude 18hp Trottle issue

    Remove cylinder head.
  7. R

    1970 Evinrude 18hp Trottle issue

    Does spark jump a gap of 1/4" , yes or no.----May also be a leaking head gasket / warped cylinder head.
  8. R

    1970 Evinrude 18hp Trottle issue

    Remove bypass covers.----Have a look at pistons and rings.
  9. R

    1971 9.8 110 driveshaft removal

    Remove bolt on the bottom of the driveshaft.
  10. R

    1970 Evinrude 18hp Trottle issue

    The timing tool is nothing but a " dummy " flywheel and a time saver.-----You can use the timing marks on your flywheel to do the same procedure.----I missed the new fuel pump in post #1 perhaps.----Strong spark means nothing to me.----Does spark jump a gap of 1/4", yes or no ?
  11. R

    1970 Evinrude 18hp Trottle issue

    Post actual compression test values.----Have you inspected fuel pump diaphragm ?-----Does spark jump a gap of 1/4" or more?
  12. R

    1982 7.5 hp Johnson compression numbers?

    Prop should spin with your little pinky finger.-----Perhaps lower unit was full of water at one time.-----Here I would take lower unit apart in seconds to inspect bearings and gears.----Perhaps lower unit is binding up , thus the lack of speed.
  13. R

    1983 mercury inline 6 no fuel #5 cylinder

    Checked fuel pump diaphragm?-----And post the actual compression values here.
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    1983 mercury inline 6 no fuel #5 cylinder

    3 reed blocks with 6 reed sets..----each reed set feeds 1 cylinder
  15. R

    1982 7.5 hp Johnson compression numbers?

    Compression is so confusing.----Reading of 90 is fine.-----Find the real reason for the lack of speed.
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    1982 7.5 hp Johnson compression numbers?

    The 90 / 95 is very good.-----The 1980 and newer are a wonderful motor.-----Is it running on both cylinders ?-----Pull one lead off the sparkplug.---Try and start it .-----Repeat with other lead.----Anything broken on carburetor linkages ?
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    BF100 out of time?

    Perhaps someone sold it due to big problems.-----So do the simple trouble shooting.
  18. R

    12' Aluminum V-Hull - Issues porpoising and planing

    I agree.-----Have seen whale tales on boats and motors.----Promotional material makes folks think it will cure everything.
  19. R

    Prop, or Engine Issue?

    The 70 HP triple was first marketed in 1974.----And it sure came with a warning horn in the control box.-----Simply amazing that folks own these motors .---Know nothing about them or do not care to learn.-----Just turn the key and roar away from the dock.-----No wonder some of these fine motors...
  20. R

    12' Aluminum V-Hull - Issues porpoising and planing

    Try a ---" whale tale "---device on your motor.
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