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  1. jimmbo

    Sputtering Johnson V4 90hp - 1994

    If it's #1 that is the Problem, try to get a look at the Top of the Block, for Oil. I am mentioning this cause if the Upper Crankshaft Seal is worn, Oil can get out, more important though, is that Air can get in, leaning the Top Cylinder.
  2. jimmbo

    Sputtering Johnson V4 90hp - 1994

    A Service Shop, certainly will not use Noncompliance Parts, at least any Competent and Ethical Shop. As for Do-it-Yourselfers... Insurance Companies can and will deny Claims, including Liability if a non USCG certified Part, caused a Problem. And they are pretty good at finding things like that...
  3. jimmbo

    Sputtering Johnson V4 90hp - 1994

    Looking at the Parts Diagram for your Carb, I would say the Idle Mixture is fixed and not adjustable.
  4. jimmbo

    Can't sync my 2003 25 hp 2 stroke...

    Keep in Mind, that we don't have your Motor in front of Us, and are going by the Symptoms and Descriptions you provide. What do the Plugs look like after running? Looking at the one Pic, the part that secures the Part you adjust the Cable Length with(Trunnion), looks like it signs of...
  5. jimmbo

    Sputtering Johnson V4 90hp - 1994

    Some people are always screaming about Red Tape, how it slows things down, and adds Expense, but those Rules and Regs are the Result of Boneheads who use whatever they think will Work, ignoring Common Sense if it doesn't match their Thought Process. Same goes for those who insist that there is...
  6. jimmbo

    Sputtering Johnson V4 90hp - 1994

    I believe there is a USCG Cert required for any Fuel Line used in a Boat, so Auto/Truck Fuel Hose might not be Legal
  7. jimmbo

    Mercury classic 40hp two stroke

    No, the 1957 Inline 6(60hp) was an extension of a 40 inch block. The 50hp was the 44in block. When they added 2 more to it, it became the Merc's 75hp
  8. jimmbo

    Can't sync my 2003 25 hp 2 stroke...

    I would then assume that something else in Setup is not correct
  9. jimmbo

    Can't sync my 2003 25 hp 2 stroke...

    You have the Throttle Cable Length adjusted to provide a bit of Preload on the Idle Speed Stop Screw? It will need to be readjusted anytime the Idle Speed is changed. Too Little or No Preload will result in inconsistent Idle Speeds, usually too high, Too Much Preload, it becomes more difficult...
  10. jimmbo

    Sputtering Johnson V4 90hp - 1994

    Those Tubes are Brass, and Brass is an Alloy containing Copper, which when oxidized by water, creates the Green Oxide. High Humidity will also cause that.
  11. jimmbo

    Double lip/extended lip seal - which way does it install??

    Just curious, is that a Genuine OMC/BRP part? The part of the Seal, that I had the arrow point to, would be the part that would be installed outward, closest to the Prop, well actually the Thrust Washer.
  12. jimmbo

    Should I change prop pitch/ go to stainless.

    Oh, that POS, again 80% of the Retailers, which there are None, approving this thing, means Zero approval. It pops up every 6 months or so, along with raving Reviews that are not even the least bit Credible
  13. jimmbo

    Double lip/extended lip seal - which way does it install??

    The Arrow is Pointing to the Metal Side, at least it would be on a genuine OMC/BRP, even a Sierra Seal.
  14. jimmbo

    Double lip/extended lip seal - which way does it install??

    Google's AI showed this " When installing a one-piece double-lip seal on your 1982 60hp Evinrude propeller shaft, orientation is key. The solid body (metal side) of the seal must face outward toward the propeller, while the open side (with the spring visible) should face inward toward the...
  15. jimmbo

    Can't sync my 2003 25 hp 2 stroke...

    Perhaps the Pivots are a bit dirty, and need cleaning and a bit of fresh Grease. Same goes for the Linkage, and return Spring to the Carb. What Service Manual are you getting the Link & Sync Info from? I know some of Mercury Electronic Ignition Boxes would alter the Timing electronically at high...
  16. jimmbo

    Mercury classic 40hp two stroke

    Mercury used to basically add cylinders of the same Bore and Stroke In the 50s they used the 20 inch Twin, doubles as a 40 inch 4 Cylinder, and in 57, added 2 more to make the first inline 6. Fast Forward to the 70s and the 33.3 inch Twin Bore and Stroke, used on the 40hp, was doubled for the...
  17. jimmbo

    Need help with steering cable.

    I just looked on Amazon, for 'Replacement Steering Cable for Teleflex Rotary Steering', and many options appeared
  18. jimmbo

    Mercury classic 40hp two stroke

    Reread what you posted in Post #4
  19. jimmbo

    Help identifying v4 johnson

    The Chart you show, just shows 140, and doesn't separate the Crossflows from the Loopers, except by yr, and there is Difference in how much Timing is allowed In 1985, a completely different Motor became the 140, it was a larger Loop Charged Design. 85 was also the first yr OMC started to Prop...
  20. jimmbo

    Mercury classic 40hp two stroke

    The Oil Mixing System wasn't introduced on the 50hp till 1986
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