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  1. jimmbo

    Engine tune-up spray

    No it is Not the Same as SeaFoam, as it actually does soften Carbon, so as to free up sticky Rings. SeaFoam, being mostly a very light Oil, simply makes a lot of Smoke Merc's Power Tune is also Superior to SeaFoam, CRC makes a couple of Good Combustion Chamber Cleaners too. Granted todays...
  2. jimmbo

    '74 Evinrude 9.9 Issue

    Do You have a Spark that can consistently jump a 5/16" gap on both Plugs? Did you replace/clean and set the Points, to 0.020"?
  3. jimmbo

    Evinrude 60 HP (3 Cylinder) Won't Suck Fuel

    According to the Parts List it does https://www.marineengine.com/parts/johnson-evinrude-parts.php?year=1987&hp=60&model=E60TLCUC&manufacturer=Evinrude&section=VRO+PUMP
  4. jimmbo

    Evinrude 60 HP (3 Cylinder) Won't Suck Fuel

    Well there are 3 Carbs and associated Fuel Lines, a few Oil Recirculation Lines/Hoses, Intake Manifold and Carb Gaskets, Crankcase Gaskets/Seals, as well as a VRO Pump, all of which can Leak.
  5. jimmbo

    Evinrude 60 HP (3 Cylinder) Won't Suck Fuel

    1987 model How far up is the Gas-Oil coming from, like under the Flywheel?
  6. jimmbo

    Prop, or Engine Issue?

    The Shift Wires went thru a Fitting and ended up inside the Exhaust Tube/Housing, but there was so much Water in there, they never got very Hot, unless the Water Pump Failed... Had both Evinrudes and Johnson with the Electric Shift. I like the Johnson Control better, as it was One Motion, where...
  7. jimmbo

    Prop, or Engine Issue?

    We had the 63 Johnson Electramatic, and it never gave any Electrical System Problems. Granted it didn't have any Electrical Circuit for the Choke. In 63 the Starter Solenoid and Charging Regulator for the Generator were in a Junction Box in the Bilge. By 68 I think all that stuff was under the...
  8. jimmbo

    Throttle arm slop

    Keep revving it like that with no Load and you won't have to worry about the Throttle Linkage. The 1972-1978 Control Box doesn't have linear Lever Motion to Throttle Cable Movement. Most of the Action happens after the Lever is Horizontal. That flat spot may very well be intention, to insure...
  9. jimmbo

    1977 Evinrude 85hp - Intermittent power loss

    Misfires on these engines have been known to happen when the a Spark jumps from the Wire/Boot, to the Cowl Latches on the back of the Cowl.
  10. jimmbo

    Prop, or Engine Issue?

    The only OMC Outboards that had a 4 Barrel Carb were the 64-65 90hp and the 66-68 100hp, the other V4s up till 68 had a 2bbl Carb The engines that had the 4bbl were actually easier on gas per HP than the 2bbl Motors
  11. jimmbo

    Clutch dog

    How many Contact Points for the Dog and the Gear...
  12. jimmbo

    Identify Motor

    It is either a 25 or a 20hp. A 35 would be considerably Different below the Cowl Pan. Bracket, Midsection, Lower Unit, and Prop
  13. jimmbo

    High Altitude prop question.

    How much higher in Altitude? What is you WOT Rpm at you usual Location? And what is the WOT Range of the Engine.
  14. jimmbo

    2 HP dt2 v 2.5 fourstroke Suzuki.

    I would stick with the 2 stroke.
  15. jimmbo

    Outboard upgrade.

    Plus the 2 stroke will keep the Skeeters at Bay...
  16. jimmbo

    2 HP v 3 HP.

    One could be under rated, while the other over rated... 70 yrs ago Mercury was Famous for that, their 10hp was blowing OMC 16s out of the Water...
  17. jimmbo

    Is a Mariner 115 any good?

    Keep your Tower of Power.
  18. jimmbo

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

    Far too many times we hear "I have worked on Auto Engines, or Aviation Engines". That kind of means Nothing when it comes Older Outboard Engines. An frequent Example, is how many "Experienced Mechanics" insist on trying to set Idle Timing... or adjusting Carb Linkages to adjust the Throttle...
  19. jimmbo

    Curious, how are old boats disposed of that marinas refuse to haul out?

    Works for me!
  20. jimmbo

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

    Maybe, however, as Electronic Parts warm up, and under Cowl Temps go up, those Electronics can go Wonky, resulting in Weak and/or No Spark
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