Search results

  1. Scott06

    Mercruiser 3.0 135hp. Crank and rods

    Yes turn the crank - but find a competent machine shop first and have them go through it- check the crank and rods. Nothing you can cath your nail on will work . When you say it was a new 2019 3.0 - new GM marine base engine or a remanufactured by some knucklehead?
  2. Scott06

    No spark plug spark... 170 MC , 1985 Sea Ray

    Chaffing on wire from points to negative side of coil can do this
  3. Scott06

    No spark plug spark... 170 MC , 1985 Sea Ray

    Exactly if supplying 12 v direct from battery wouldn’t matter if there are upstream voltage issues
  4. Scott06

    No spark plug spark... 170 MC , 1985 Sea Ray

    When this happens take the coil wire off the distributor cap ground it and see if you get a spark while cranking. It’s possible your loosing spark in the cap and rotor
  5. Scott06

    Volvo Penta SX-M drive Gimbal bearing obliterated and Gimbal Bearing Housing damaged

    Good to hear you knew what you were getting into and paid appropriately. I did the same thing five years ago- bought a boat with a known cracked engine block. Did the repower myself and it has been perfect for my family use.
  6. Scott06

    Mercruiser 5.7 Thunderbolt 5 Hard to Start

    Did you set or verify the timing by putting it in base mode? I’m wondering if the timing is not correct and that may be causing hard starting
  7. Scott06

    Pressure Testing Specs

    If it’s comp,Evelyn dry I would think it would make some noise. What did you do to the drive ? Was it working or did u have it apart for maintenance
  8. Scott06

    Pressure Testing Specs

    Water pump impeller
  9. Scott06

    Mercruiser 5.7 Thunderbolt 5 Hard to Start

    There’s no resistor wire on a a TBV ignition that was only used on older points systems. your comment above on the tach wire. There are two wires going to negative side of coil. One that goes to the ignition module one that goes to the tach. If there’s only one wire they split of somewhere in...
  10. Scott06

    Mercruiser 5.7 Thunderbolt 5 Hard to Start

    What necessitated replacing the timing set ? I have the same ignition if there’s a whiff of gas In there it starts right up.
  11. Scott06

    No spark plug spark... 170 MC , 1985 Sea Ray

    Dwell is a measurement of the amount of time (expressed in degrees of shaft rotation) the points are oclosed, which is what builds energy in the coil, that discharges when they open. While using a feeler gauge will get you in the ballpark it is subjective because you have to have the points on...
  12. Scott06

    1998 Volvo Penta 4.3L GL

    Michigan Motorz has both remanufactured and new base engines in that budget range. But you can save some money if you have a local engine machine shop who knows what they are doing
  13. Scott06

    No spark plug spark... 170 MC , 1985 Sea Ray

    Be Nice
  14. Scott06

    No spark plug spark... 170 MC , 1985 Sea Ray

    this tells you your points aren’t properly adjusted or working. When you manually short them out like this you are doing what should happen when the rubbing block opens the points then they close. Likely you have measured the open gap, but they are not closing fully Which shorts to ground and...
  15. Scott06

    Output shaft slop

    You’re fine those splines look great, no wear at all. the u joint end you are rocking is supported by being in the gimbal bearing when installed and properly aligned in the boat.
  16. Scott06

    Irnflatable PFDs revisited

    I bought one for my older brother who came down with MS a couple years ago. He likes to fish but cant get around so well anymore. i thought he’d fight me wearing it, but he really likes it very much. Perfect solution gives him confidence to keep being out on the water
  17. Scott06

    No spark plug spark... 170 MC , 1985 Sea Ray

    Don’t buy another coil you‘ve tried two, or at least ohm out the primary and secondary sides to verify if it is bad, google it you’ll find some ohm specs after reading through the only things left are the condenser and setting the points with a dwell meter . Willing to betif you are getting...
  18. Scott06

    Crud in carburetor, is it a problem?

    That’s a good list I’ve also used starter fluid sprayed at gasket joints like carb base and intake to head. for testing fuel pressure I’ve seen Ts that thread into the flare fitting on the carb and have a female flare for the fuel line sandwiches in between line and carb points to if firing...
  19. Scott06

    Volvo Penta SX-M drive Gimbal bearing obliterated and Gimbal Bearing Housing damaged

    Best bet looked for a used fresh water gimbal housing or complete transom take out. You have to pull the engine to replace this. If there was no gasket in there seller knew this was damaged and in need of a fairly expensive repair, slapped it back together. The rest of the bearing is missing...
  20. Scott06

    No spark plug spark... 170 MC , 1985 Sea Ray

    Do you have the connection from the cap down onto the rotor? May be missing if you have a spark off the coil to ground- good consistent blue spark, then the issue is in cap rotor or plug wires
Top