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  1. ScottinAZ

    Mercruiser 3.0 diagnosis / serial number decode

    geez, all three of us were johnny on the spot with that one !!
  2. ScottinAZ

    Mercruiser 3.0 diagnosis / serial number decode

    the neutral cutout grounds the coil when switching gears to allow the gears to unload the shifting dog clutches. If this were inoperable during shifting, it would be much harder to shift out of gear. If this is not working properly, disconnect it (troubleshooting only) and verify that the engine...
  3. ScottinAZ

    Starting problems.

    ok, your serial number is on the sticker in the "middle" picture. check the tune up page that I posted last night, your serial number is in the range specified. if you need more info on the carb, its in Mercruiser Manual #3. If you need info out of the manual, let me know, Ill see what I can do...
  4. ScottinAZ

    Mercruiser 3.0 diagnosis / serial number decode

    bingo, if the coil isnt being triggered, then it will not work. In your case, make sure the points are clean, and check the dwell. when this checks out, you should have spark
  5. ScottinAZ

    Mercruiser 3.0 diagnosis / serial number decode

    the coil produces the spark, which then goes to the distributor rotor, and out through the side terminals, wires and to the plugs. What you have is the points (also inside the distributor) that doesnt seem to be opening which causes the magnetic field inside the coil to collapse creating that...
  6. ScottinAZ

    Mercruiser 3.0 diagnosis / serial number decode

    the coil needs a switch in order to fire. This is the points. If the coil has 12v and ground, but the points arent working, then you no get spark. either the coil is wired wrong, or the points arent doing their job
  7. ScottinAZ

    Anyone Seen these?

    have you noticed that YOU are the only one here that is defending this prop, regardless of the questions brought up about it. Have YOU noticed that there is only ONE site doing videos and/or testing of this prop? Have YOU considered that there may be a reason for this?? as for what data I would...
  8. ScottinAZ

    Anyone Seen these?

    yep, its original technology, and with that come questions that either are being avoided or not answered with the testing that has been shown. I think a lot more would be accepting of this prop if there were a true apples to apples comparison with another known technology. Say a SAME PITCH/SAME...
  9. ScottinAZ

    7.4mpi just started running rough and with gas coming out exhaust

    ouch......
  10. ScottinAZ

    Starting problems.

    ok, with what I can see on your valve cover, you have a 330 engine. Using a bit of guesswork that yours is about a 1982 vintage, Mercury service manual #3 has a serial number range from 4889680-6083144. if yours falls inside this range, here is the tune up page from the manuals. If yours is...
  11. ScottinAZ

    Starting problems.

    ok, easy there.... your engine serial number like mine is on a sticker attached to the valve cover. I can see the red sticker on the right side cover that has your serial number on it.
  12. ScottinAZ

    Starting problems.

    no. those are from the engine manufacturer, and we need the Mercrusier numbers to pin down the exact model, and therefore the exact specs needed to get you back and running. Those heads and block would be found in everything from a Chevy or GMC pickup to your boat. In this case, they really...
  13. ScottinAZ

    Starting problems.

    well, by "hid", the only one of my serial numbers that is in the "stock" location is the one on the outer transom/gimbal assy..... My engine and transom plate numbers are on a sticker on the valve cover, and if they stamped a number into my outdrive, I still havent found it....... so there IS...
  14. ScottinAZ

    Starting problems.

    both of those are casting numbers. as Dubs said, there "should" be a tag on the block near the starter.
  15. ScottinAZ

    Starting problems.

    you will need the serial number off of the engine itself. There is a sticky up the top with links to find out where Mercury hid it on your engine.
  16. ScottinAZ

    Starting problems.

    the specifications should have been in the instructions with the carb kit. Otherwise you will need the manual for your engine. Good starting point is 1 1/4 to 11/2 turns out. if they are screwed in hard, there is no fuel flow through the idle circuits, and no starting.....
  17. ScottinAZ

    Starting problems.

    to start with, what are the idle screws (the two needle valves in the base of the carburetor) set at? Do you get any fuel squirting into the primary throats when operating the throttle? Did you properly set the float level?
  18. ScottinAZ

    470 Timing

    sounds like a leakdown test is in order to see where the issues are. With any luck running lean didnt cause any major issues
  19. ScottinAZ

    Running 3.7 190 with no outdrive

    IIRC procedure for retorque is to allow to cool
  20. ScottinAZ

    Running 3.7 190 with no outdrive

    none that I am aware of. Have my 120 in the same state right now.
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