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  1. R

    Melted plastic guide tube between Alpha one halfs

    Happy holidays all just finished fall striper season here in the Northeast. Finished the year with only one keeper, but what a nice fish. 50 inches 49 lbs! Anyhow pulled drive and split for inspection. First thing I saw was the 4 metal plates for exhaust flapper valves. Then I noticed white...
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    Alpha one shift cable rigging

    Question: Do these cables stretch some how? Cant understand how being as they're a solid piece if metal inside housing. Problem: Shift interrupt stays engaged too long and kills engine comeing out of gear. It also grinds going in to fwd instead of quick thump and in. Have set cable at exactly 6...
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    Facrory New 5.7 bogs down under load

    Just took first trial run on factory new 5.7 mercruiser on my 22 ft walkaround cuddy. At about 3800 rpm the boat just starts to come up on plane and the engine coughs and bogs down and rolls back to idle. It will not take any more fuel. Cant really get past 3000 rpm. Runs fine on garden hose...
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    4.3 For Sale

    This engine was completely rebuilt by US engines Inc in 2012. Only used it about 30 hours since. I pulled it out with the intention of changing coupler and a 4 barrel upgrade. While it was out , I pulled both heads and had my local machine shop go through and overhaul heads again. I bought a new...
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    Alpha I GenII Outdrive slipping?

    Bought a SEI 116 outdrive last march. Took it out july Fourth on river and it seemed like I had a slipping clutch ( plenty rpm no speed). Raised the outdrive took a look @ prop put it back down and somehow it resumed to normal. Got home took prop to shop he put a new hub in but said it really...
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    US engines STAY AWAY

    Bought an overhaul exchange 4.3 mercruiser from US engine on line. I had some warranty issues I wanted help with from owner MR. Charlie Silvers. Most arrogant, combative, nasty human being Ive ever done business with. It took a credit card dispute just to get my core deposit back. My issues were...
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    Thuderbolt IV 4.3 mercruiser wont start.

    Hi everybody. Can anyone help me salvage my short striped bass delaware bay season? Made one trip came back on a rope:mad:. Wouldnt start finally figured no fire. Went through troubleshooting procedure and found no voltage @ amplifier white red stripe wire. Bought new amplifier ( this one was...
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    Alpha one gen II. mad corrosion.

    Boat goes into salt water slip in fall for 6- 8 weeks only. Has stainless prop. keep a floating battery charger plugged in to dock power. outdrive getting eaten up. BAD. installing mercathode kit now. If the problem was caused by shore power How will I keep battery up now that there will be a...
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    1992 4.3 failure

    First trip of spring, ran fine in fall. Low power 3800 RPM WOT. starts knocking shut it down bilge full of oil. towed in. After further review #2 exhaust valve sucked inward dime size hole center #2 piston. All plugs blackish only 1 a nice tan. Exhaust man 3yrs old aluminum and looks fine...
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    Stuck rotor thunderbolt IV ign.

    1992 4.3 mercruiser Alpha one Gen II. Any tips on changeing rotor under dist. cap? This one seems to be stuck good. Dont want to damage dist.
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    Gear oil coming out alpha one drain hole

    Just pulled boat out, (4.3, alpha one GenII) saw gear oil (sick gray color) coming out drain hole top of lower unit right side couple inches fwd of rudder shaped zinc. Not much left on stick checking from top. drained a little out bottom color seemed ok. Had a upper shift shaft bolt come out of...
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