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  1. R

    looking for fuel pump kit...

    A ruptured fuel pump diaphragm would put fuel directly into the engine.----Easy thing to check.
  2. R

    looking for fuel pump kit...

    What trouble shooting have you done ?----Installing a fuel pump kit might even put more fuel into the carburetors.------Does the manual fuel pump on the hose go hard ?
  3. R

    looking for fuel pump kit...

    Is the fuel pump not working ?-----What is your motor doing / not doing ?
  4. R

    1987 johnson v4 110 cyl 4 not running

    The crankcase compression has absolutely nothing to do with compression in the cylinder !!----One of the reasons for so much confusion on simple trouble shooting.----Crankcase compression puts fuel air into the cylinder.----It can not ---" pack "--- the cylinder since exhaust ports ( huge holes...
  5. R

    Mercury 9.9 4 stroke long to short

    Does the motor have a 5" spacer between lower unit and exhaust housing ?
  6. R

    '95 120hp compression test results

    No need to open throttle for a compression test on this 2 stroke motor.
  7. R

    Outboard Overheating?

    ^^^---Applause on the above information.----Have seen many motors with tell tales destroyed from overheating.
  8. R

    1994 112 johnson spl. Will not idle.

    Sorry----Your inspection needs to start somewhere.-----A compression test is the first thing that most mechanics do.----If that passes the test then great.-----You will see many posts with ---" carburetors have been cleaned 3 times, motor still runs the same "----You would be sadly disappointed...
  9. R

    1987 johnson v4 110 cyl 4 not running

    There is a seal on the bottom of the crankshaft.----Prevents crankcase compression from leaking out.----There are metal seal rings on the crankshaft ( 6 of them ). that prevent leakage between crankcases.----Sorry----I am not there to inspect.----I can only suggest what might need to be looked...
  10. R

    Mercury 9.9 4 stroke long to short

    Serial # is ?
  11. R

    1976 Johnson 115 Rebuild/Upgrade Help

    So the cylinder heads were taken off 20 years ago and then the motor was set aside ???----They must have seen something.----Post pictures of cylinder walls.
  12. R

    1976 Johnson 115 Rebuild/Upgrade Help

    To go from 115 HP to the 135 HP you need to fit exhaust tuner ( not just bolt on ) the pieces.---Bigger bore carburetors.---Intake fillers ??--Cylinder heads.--A donor motor is the best option.
  13. R

    1994 112 johnson spl. Will not idle.

    Simple facts for you.----There are no idle mixture screws shown on your 112 HP motor.----These motors are famous for broken piston rings.----Post the compression test results for your motor.
  14. R

    1990 mariner 15 hp carb issue

    What other trouble shooting was done ?-----I would borrow another tank and hose for a test run.
  15. R

    1987 johnson v4 110 cyl 4 not running

    Facts-----Cylinder #4 needs 4 things to run----Correct amount of fuel.----Spark at the right time.------Compression in the #4 crankcase.-----Compression in the cylinder.------Should be easy to determine what is going on I think.----What sort of Fuel pump.-----If it has the regular ( 2 nipple )...
  16. R

    Runs and Dies instantly

    ??----Reed valves have nothing to do with compression in the cylinders !
  17. R

    1952 johnson fastwin no tank vale

    Free or less than $25----A 2 hp or the --" big " ---25 hp ?
  18. R

    Bad voltage to starter

    Load test the battery and inspect the battery cables.-------Sorry ---I can't believe anyone would just order a new starter without inspecting the old one.----Easy to inspect and put new brushes in for a spare.
  19. R

    Did I make a bad mistake?

    Charge battery,----Take all plugs , out crank it over till gauge stops moving up.
  20. R

    Mercury 80hp 800 1970s LU oil type

    A ---" new to you motor "----Best install a new impeller on that motor.
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