Recent content by jimmbo

  1. jimmbo

    Oil change

    At least the Oil's Detergents are keep that crud in suspension so it can be drained. Far better than having it building up on the Internals, while the Oil remains Clean, at 100 hrs. How long have you owned the Motor?
  2. jimmbo

    1983 Mercury 150 Vibration and Noise

    Keep in mind, with a 2 stroke, if there a very early spark, while the Transfer Ports are open, the Flame front can travel back into the Crankcase, as well as trying to push against the Piston coming up. When on the Muffs, the noise of the Exhaust, as well as the Lack of any Back Pressure, may...
  3. jimmbo

    1983 Mercury 150 Vibration and Noise

    All the wires to and from the Switchboxs didn't get scrambled when you were making other changes to the Ignition system? Do another Compression Test. I think 84 was the first yr where the Engine mixed the Oil into the Gas, so I hope you were running Premix
  4. jimmbo

    Late 70's to Late 80's - Worth shopping for?

    The 115 FICHT wasn't as High Risk as the 1997, 98, and 99 150/175 FICHTs
  5. jimmbo

    Late 70's to Late 80's - Worth shopping for?

    In 1978 and 79, OMC had 99 cubic inch 85, 100, 115, and 140 V4 Motors. In 1980 thru 1984, they were 90, 115, and 140 Motors. In 1985, the V4 Loopers were introduced, these V4 were called 120 and 140hp, the 99in Crossflow V4s were 90, 115hp. As the 80s went along, theses engines were also called...
  6. jimmbo

    Used or reman outboard

    In the Late 70s through into the 80s there were 3 inline 6s, a 90, a 115, and a 140. Although all of them were the same Displacement, and shared a few Parts like the Crankshaft,, there were many differences, Porting and Port Timing was different, in some cases there were what was called Power...
  7. jimmbo

    1988 125 HP Force Rebuild

    I wouldn't try to rebalance it, I would replace it
  8. jimmbo

    Used or reman outboard

    Some People, including some Mechanics, think every I6, or V4 Powerhead is Identical, despite there being a 50hp difference. After all, in their Eyes, it is just a difference in the Jets in the Carbs.
  9. jimmbo

    Johnson won't start

    When You said only a few Ounces drained out, but no Water, I thought I should ask, in case you had tried filling it from the Top. I still find it odd that no Water was in the Case. This is going to sound Pessimistic, while I like saving money by sourcing Parts myself, letting the Person doing...
  10. jimmbo

    Johnson won't start

    The last time you put Oil in Gearcase, how did you fill it?
  11. jimmbo

    1988 125 HP Force Rebuild

    After 7 years that Impeller is past its Best Before Date.
  12. jimmbo

    cooking

    Pork, Nature's Perfect Food
  13. jimmbo

    How to run twin 5.0s from portable outboard tanks

    I know my 5.7 Volvo Penta, can go thru 33 Gallons(us), in 90 minutes at WOT, so a 6 gallon potable tank would last about 16 1/2 minutes
  14. jimmbo

    1994 Johnson 60hp (J60TTLERS) - Rough Idle & Milky Plugs on All 3 Cylinders

    Is the Cooling System working Properly? Low Engine Temp, especially at Idle, can keep Water(a Product of burning Fossil Fuels) from Boiling off. Check Thermostat for proper Operation, as well as the Poppet Valve, for deterioration, and a weak Spring
  15. jimmbo

    Left side lean?

    Does the List increase as Speed goes up? Run a Straightedge on the Starboard side of Hull from the Transom forward, and look for any gap forming. I am suspecting that the Stringers have rotted out at the back allow the Hull to flex, creating a Hook. It is a 23 yr old boat, and I suspect your...
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