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    lack of power on 4.3 thunderbolt 5

    hey all, so i have this deck boat with a 2004 4.3 w/ 2 barrel mercarb and TB5 that was stalling out and found the carb needed to be rebuilt. i had that done and did a minor tune up, plugs and cap/rotor. when i tuned it i checked the timing and found it to be set @ 0 degrees, i reset it to 10...
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    converted an early 4.3 from 2 to 4 barrel carb. getting issue at WOT

    hey i got a question i want to through out to see if there is anything i need to look at. i converted a 1991 4.3, pre vortec,pre balance shaft, engine to a 4 barrel carb, it runs great until you get it opened up. it hesitates and stumbles. is the timing different with a 4 barrel compared to 2...
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    dpsm outdrive holds pressure after seal repair but not vacuum.

    i have this drive from a 1998 v/p and the outer prop seals were leaking. i made the repair but it wont hold a vacuum of 15in, it drops to about 11 or 12. the book says to apply heavy oil to find the source. has anyone done this that can walk me through it. i am not familiar with this process...
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    2000 merc 200 EFI no start/no fuel pump

    hi all, im working on a merc 200HP 2 stroke EFI motor with no start condition, (ot143331) it was put away wet last year and now would not start. the fuel pump was not running. testing with as probe i found power and no ground. during crank. when i sent negative to the (-) terminal the pump...
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    removed dpsa from gimbal & found oil in bellows

    i got the drive in the shop and pressufre tested it at several pressures and pressure has held at each level. what would you do? change out the seals in the input shaft or chalk it up to an anomoly and check it again next year?
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    replacing the inner prop shaft seal on bravo 3

    can this be done without disassembling the case? can i remove the carrier and outter shaft without pulling the driveshaft? i have found several videos on changing the outer shaft seal but nothing on the inner. when i look at the manual, it appears to all come out from the prop side. the way i...
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