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  1. R

    Installed Pertronix ignitor. Now rough idle

    the crank shaft pulley is the mark ..then the ignition timing marker is on the engine , the RPM is 600-1100 RPM ..I used a white paint on the marker .. the 1983 120HP is around 4 deg..distributor is moving a small amount of rotation ,, to adjust it ..in todays world the gasoline is not lead...
  2. R

    Installed Pertronix ignitor. Now rough idle

    you have to adjust the timing when you change the pertronix 1146a... also the positive ignition coil , engine runs is 9.5volts dc .. my MCM470 has a resistor wire ...engine runs 9.5 volts ....then I changed the correct timing when the pertronix changes the timing .. then set it ,, the engine...
  3. R

    Compression Test Readings

    new head bolts !!!! good ..
  4. R

    oil leak on 3.0

    I did some rust on the metal rust holes https://www.amazon.com/TRAVACO-PRODUCTS-MARINE-TEX-Marine-TEX/dp/B00144DIKA/ref=sr_1_6?keywords=marine-tex%2Bepoxy&qid=1663806509&sr=8-6&th=1
  5. R

    WOT RPM too high. Where is the slip?

  6. R

    3.0L idle way too low

    TO adjust the idle .. then inspect the timing ignition ...
  7. R

    Compression Test Readings

    did you test the engine compression correct ?
  8. R

    Starting point for idling/performance troubleshooting

    the engine is a tappet noise .... did the engine oil is water in it ..
  9. R

    oil leak on 3.0

    remove the timing cover then inspect the oil leak ...then the oil pan is a break down gasket then take the motor out ............. you have to a couple of persons to take out and put in the motor ..
  10. R

    Main engine for trolling

    my boat engine runs over 37yrs no engine failures ..engine runs very quiet ..flat tappets no wear ...I use 5oz SN PLUS LUCAS ADDITIVE .. LOOK UP THE OLD ENGINE,, AUTO FORUMS ...1985 AND OLDER ..
  11. R

    Main engine for trolling

    ZDDP/phosphorus oil additive in your boat motor oil ... in todays world oil is dropping the zinc in the oil .... tappet valves are worn with the new oil ... https://lucasoil.com/products/engine-builder-lubricants/engine-break-in-oil-additive-tb-zinc-plus ... I put 5 oz of TB-PLUS ... THE ZINC...
  12. R

    oil leak on 3.0

    remove the timing cover then inspect the pan gasket. I took off my timing cover and I inspect the pan cover ... cleaned it and I put the sealer of the gasket ..the oil pan is not leaking .. I had to fix the water pump... if you take out the motor , a lot of money...drop the oil pan ..
  13. R

    Main engine for trolling

    Ford’s ZDDP/phosphorus threshold is more in line with what is widely recommended for flat-tappet ,,,,,,,,, engine oil additive ..
  14. R

    Main engine for trolling

    is your 302 ford engine the model year ? flat tappets your engine ?
  15. R

    Merc overheating…

    so you did not have a trailer ... well you have to go to the boat mechanic and the out drive impeller is a break down . boat mechanic also inspects the water engine cooling . engine is around 240F ,, oil is 14 psi ...low pressure ,,,,,,,,,,,,,,,,typical around 40 psi ...normal.. the impeller...
  16. R

    Gears noise on Sterndrive

    https://www.youtube.com/results?search_query=Mercruiser+3.0+Shift+Cable+Adjustment
  17. R

    Gears noise on Sterndrive

    the lube is on the cutoff switch module .. then the switch.. is moved it rev/fwd .. also the cable to the out drive can be a wear issue ..
  18. R

    Trim issue

    use the ohm meter on the sensors out drive
  19. R

    Trim issue

    use the voltmeter .
  20. R

    Trim issue

    the out drive switch or the wires corroded to the up switch, then the up button on the dash was using the dash up switch ..2 solenoids up and is down ...the dash switch uses a voltmeter ...to troubleshoot it ..
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