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  1. P

    lack of power on 4.3 thunderbolt 5

    im thinking and there is no way the engine would run as smooth as it is if the rotor is a v8 rotor. if at all. but i will check it also, whats troubling me is that before the tune/carb, it was operating better. the compression doesn't just drop
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    lack of power on 4.3 thunderbolt 5

    yes it is advancing past 20, and the rotor better be the right one, it came as a kit, cap& rotor but i will check, that would be a real kick in the ass. something you just take for granted. ill be back to follow up
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    lack of power on 4.3 thunderbolt 5

    yes it is advancing and yes i removed the jumper wire
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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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    No Spark, feels like I’ve tried everything.

    run a jumper wire from bat + to the electric choke wire(purple) same wire that feeds the coil. you solid cranking sound? not a weak battery right?
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    1996 Four Winns 5.8 Duo drive Fuel pump location

    isnt this a volvo penta engine? if the pump is putting out too much pressure, fuel will flow out of the top vent. and flood the the engine. it will not make the engine run at high idle. put a gauge on it. that being said, if the pump is the original EFI pump, yeah, you need one for a carb. if...
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    Missing hole under water pump

    don;t worry about it, the big hole is were the water flows. as long as the pump fits properly and does not hit the timing cover
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    Shift cable replacement Alpha I Gen II 5.0L - cable binding

    get a flashlight down in the transom area by the starter/exhaust pipe and see if the cable is all twisted up. if it is straight into the transom, pull the cable as straight as you can, so that means not wrapped around the y pipe and behind the steering actuator, pull it out towards the seating...
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    Oil Gauge pinned with alarm

    then you have a short circuit. disconnect the blue wire from the back of the oil pressure gauge, if it still pinned, replace the gauge wait, it is pinned high with key on, engine off and key off? then pins low with engine running? was the alarm still ringing when you have the engine running or...
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    converted an early 4.3 from 2 to 4 barrel carb. getting issue at WOT

    not saying your wrong but i would hope that a company that speciallizes in building and selling marine carburetors would know which parts to install in said carburetor. however i have seen worse errors
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    Oil Gauge pinned with alarm

    unplug the single wire by the oil filter, does the gauge stop reading high? if so, you have a switch for a light, not gauge, those sensors work as on/off, like the alarm sensor. whereas the gauge one is a potentiometer.
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    converted an early 4.3 from 2 to 4 barrel carb. getting issue at WOT

    this carb was available on this engine in the 80's & 90's so i do not think its too much carb for the engine. yes it runs great around the lake but at WOT is where there is an issue
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    A-team HEI distributor upgrade shift interrupter wire connection

    i met jesus once, he was playing a tambourine at a salvation army collection station
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    Oil Gauge pinned with alarm

    technically there are 3 oil switches, one for the alarm, one for the gauge and one for the fuel pump. #'s 7,11 & 13 7 & 11 are on the side of the block by the oil filter and 13 is on top by the distributor.
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    converted an early 4.3 from 2 to 4 barrel carb. getting issue at WOT

    its a new build from a marine carburetor shop on the internet gauranteed carburetors
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    converted an early 4.3 from 2 to 4 barrel carb. getting issue at WOT

    its a quadrajet marine carb
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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.

    well it has held a 6in vacuuum for 3 days now.
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    dpsm outdrive holds pressure after seal repair but not vacuum.

    question, when you install the prop shaft seals, do you typically grease the seal? i am thinking that the grease i put on the lips and inside the groove of the seal(were the spring rides) is causing the shaft to not get a good seal. and also , when i pul the vacuum, should i be rotating the...
  20. P

    dpsm outdrive holds pressure after seal repair but not vacuum.

    any thoughts on this
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