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  1. Scott06

    Reverse issue

    I suspect you are right that it is not fully going into gear maybe shift mechanism adjustment? Would be worried that the cone clutches are not cleanly engaging possible grinding as they slip. You using the VP lube had read something on another forum folks using merc HP gear lube in VP drives...
  2. Scott06

    How is Texas for boating?

    My cousins live in Austin been out on lake travis several times with them. I think in austin area there is a couple good size man made lakes. Water levels can vary based of rainfall
  3. Scott06

    Frustrated fuel

    what type of ignition system is on it? Thunderbolt 5 ? If so here is a troubleshooting guide https://forums.iboats.com/threads/how-mercruiser-thunderbolt-ignition-systems-work.676476/ so by voltage evry where with the ignition on you get 12 v to positive side of coil
  4. Scott06

    ANOTHER WATER IN OIL QUESTION

    That implies head gasket between those two adjacent cylinders is bad.
  5. Scott06

    Maybe Dumb first time boat owner maintenance questions.

    As mentioned replace the bellows gimbal and ujoints. If yo are handy you can usually cross ref the ujoint to an automotive the thermostat needs replacement if you are only running at 120 The prop you may want to test the tach with a shop tach or timing light to see if it is off (happpens...
  6. Scott06

    Bad day on the water - NEED ADVICE!!

    Get a used transom housing off Ebay if you do a serach they are between $700-1200 for units minus trim rams. Either way engine needs to come out and inspect the transom for hidden damage. Finacially painfull but your mechanic is steering you straight. Speak with your insurance company unless...
  7. Scott06

    Lower prop pitch to get higher RPM?

    Here is a link to the stickie on low wot https://forums.iboats.com/threads/list-of-possible-causes-of-low-wot.289767/ id verify the tach against a shop tach and go through the list before buying a prop. under the line item of ignition components set check the timing and total advance. If the...
  8. Scott06

    4.3 set timing?

    Here is one service bulletin on it https://f01.justanswer.com/oldnewenglandmarine/27437009-fea5-4619-b04c-92144e25bba4_Engine_Dieseling_or_Running_on.pdf
  9. Scott06

    4.3L block replaced with one that has the balance shaft removed

    Yes but this is different - rick took a older block that wasnt designed to have the balance shaft in it and upgraded to the newer vortec heads for more HP. If you have a balance shaft block with no balance shaft in it you will ruin the engine immediately as there will be no oil pressure due to...
  10. Scott06

    Edelbrock 1409 tuning

    Interesting so you think the spacer made it go richer? I just put a 1/2" phenolic spacer under mine for same reason, didnty help hot restarts (open throttle seems to ) and now my plugs look fouled a bit. ...
  11. Scott06

    1986 Mercruiser 3.0L

    I bet there is a screen where the fuel line goes in. May be a non issue just figuring you had replaced the carb beacuse it was gummed up possible fuel contamination
  12. Scott06

    1986 Mercruiser 3.0L

    no impeller being bad would only lead to over temop buzzer going off wont shut engine down.
  13. Scott06

    1986 Mercruiser 3.0L

    Might be worth checking the filter in the bottom of the fuel pump and carb inlet if there is one there unless you verified the fuel system was clean
  14. Scott06

    Manifold and riser/elbow question for V6 Tahoe Q4

    call tahoe boats and ask if you cant take it back to the water. Also may be in the parts manual for the boat. I found on my sea ray it was listed in the part manual that the V6 engines didnt have risers and the V8 engines did, but ...it does specify what height risers. Do you still have the...
  15. Scott06

    Mercruiser 5.0 oil pressure question

    three things will make the alarm buzzer go off engine over temp low oil pressure low drive lube as mentioned verify oil pressure with mechanical gauge could be pressure switch verify engine temp again switch could be bad verify drive lube level you can disconnect these sensors one at a...
  16. Scott06

    1986 Mercruiser 3.0L

    A couple thoughts take,out the primer bulb see if it goes away. test fuel pressure when it dies, verify pumping throttle that fuel shoots out of accelerator pump nozzles verify good hot spark when it dies
  17. Scott06

    Altitude Issues in Lake Tahoe?

    As mentioned you will loose 18% power vs sea level due to 6k ft elevation. Not sure if you are carbed or MPI? Normally for intermittant use merc just reccomends going down in pitch. If carbed and you will keep the boat at that altitude you rejet the carb leaner as well drop pitch to get enough...
  18. Scott06

    2005 regal commodore 2750 stringer/transom material?

    it could be around the drain plug and not have anything to do with rot. On my sea ray the fitting that the plug screws into is only a brass tube 3/4" long held on with three 1" screws. The screws were bent and loose from tightening the plug... it came right out the wood stops above the plug...
  19. Scott06

    5.7 EFI running hotter on starboard exhaust

    its not unusual for one side to be hotter 30-40 deg than the other. I have never checked mine with a IR thermometer but others may know what the range is. I suspect if you can touch it for a second or two your ok.
  20. Scott06

    New engine - No Fire (Volcruiser)

    So putting your spark tester on the wire from coil to distrbutor cap do you get spark off the coil ? If not it is the sensor in distrbutor or ECM. I assume you have the delco est on there but not sure. If you do get spark off the coil but not out of the distributor I would think cap and rotor...
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