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  1. incrediblened

    HELP. 4.3 NO SPARK - I have tried "everything".

    I've got no spark from a Mercruiser 4.3 V6, Thunderbolt, 1992 Maxum. I ran through the diagnostics in the manual. Here's what I find. I've got 12v at Positive Coil Terminal I've got no spark on the Spark Gapped hi-tension lead to coil when I strike the WHT/GRN lead on the ground. I have...
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    4 Barrel 470 Carb

    What type of carb goes on the 4 barrel intake manifold for a Mercruiser 470?
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    Sweet Deal on a Boat

    Hey, I've got a sweet deal on a boat. 1993 Excel 21' - Hull is GLOSSY and beautiful - round front windshield style. Solid Floors Needs new carpet / interior (if like that) But its a volvo penta motor (Owner said a 155hp - but it looks like a GM 4.3). It's been frozen and the exhaust...
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    Lil' Mechanic Needs Your Help - Push Rod Position Indicator

    I was working on the boat and had the lifter rods all pulled out and in order. One minute later, my little 2 year old helper brought a handfull of them back to me, saying, "Here go daddy". :) Anyway, could someone tell me if the circle stamped on the push rod goes up or down. All manuals...
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    Torque Specs for Mercruiser v6 4.3

    I was looking through the online manuals and I couldn't find the manual for my specific engine. (1991 Mercrusier 4.3). Manual 25 is the closest, but it says that there are different bolt lengths on for the newere 4.3 engine. Mine has all the same bolt lengths. Anyone know the torque specs...
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    Disassembled Mercruiser 4.3 Knock?

    I've got my Mercruiser 4.3 engine all torn down. Head & block decks are free of gasket residue and ready for head installation. I was doing a final cleaning and using the starter to turn the engine over. And I noticed something I didn't notice before. A KNOCK when the 1 cylinder hits TDC...
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    Proper Engine Compression - 1985 Mercruiser 140

    I'm having trouble with the search function on the website... so I'll just post my question. I just checked the compression on my 140 mercruiser. It's got 125-130-130-125-100 psi from front to back. I realize that the 4th cylinder is low. I shot some lube in the cylinder and it was the...
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    Blown head gasket between 5 & 6 - would that get water in the oil

    I just bought a boat with a blown engine. The previous owner said that there was water in the 5 & 6 cyl. Sure enough, I pulled off the intake manifold & head and the gasket was blown between the cylinders. But I also found water under the intake manifold. A blown head gasket wouldn't cause...
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    Surface rust in my exhaust manifold ports on head

    I just pulled my exhaust manifold and I noticed that I've got a little surface rust on all my exhaust manifold ports. Should I be worried about a problem, or could this just be due to condensation? -Ryan
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    Flamethrower Coil & Electric Fuel Pump

    I'm getting close to having the boat running. :D But it just wouldn't start for me tonight, and I ran out of daylight. When I started the boat, the engine turned over, sputtered, and backfired flames out the carb. Gas was fresh. Here's what I've got: 1979 - Mercruiser 470 Alternator...
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    Help - engine doesn't align with gimbal

    I am finally getting everything back together on my 470 power steering upgrade. I didn't expect this problem... but my engine coupler doesn't align with the gimbal bearing. It appears that the engine is sitting on the inner transom plate too low. Are the fiber washer & spring whatchamacalit...
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    Impeller Service Fees

    What would be an appropriate charge to have someone drive to immediately drive to my house (one hour away) and to replace my impeller in my boat.
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    EZ Question - what type of oil goes in the trim pump

    Um. What type of oil goes in the trim pump. First to answer wins.
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    Alpha / Type I Compatibility

    I've got 2 questions about compatiblity. 1) Is the alpha gimbal housing the same as the type 1? Are they compatible? 2) Are all type 1 lower units compatible? Same gear ratios in the lower, right? Can anyone help a brotha out.
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    140 Motor with JB Weld Repaired Block

    Hey, I keep trying to sell this 140 engine that runs ... but Its got a crack that's been repaired with JB weld that makes them kind of nervous. I understand, but if I had a boat to drop it into... I'd definately drop it in and feel safe about it. 2 Questions. 1) Should I be concerned that...
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    Shift Cutout Plate

    Hey, I just did a major upgrade to my Mercruiser 470 engine (converted to alpha to add power steering). Now I'm wondering where I should install the throttle/shift plate. My previous one was mounted on my pre-alpha inner transom plate, but with the alpha plate there is no place for it to be...
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    Stripped gimbal housing stud.

    One of the stainless steel studs that connects the gimbal housing to the outdrive was stripped when removing the nut. Are these studs removable?
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    Cracked inner transom plate.

    Things were rolling along smoothly with my type I to alpha I conversion. Then as I tightened my bottom left annode bolt on the inner transom plate... SNAP. I put a crack in the bottom left corner of the plate. Is this serious? Do I need to replace the interior transom plate?
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    Anyone have an exhaust stretcher? My exhaust pipe is too short.

    I recently dropped an alpha rear-end in my boat. I've converted my armstrong steering to power steering. My latest hiccup is that the exhaust tube is now short 4" from reaching my exhaust riser elbow. It appears that the exhaust riser elbow and the exhaust tube line up... the tube is just...
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    Steering Cable Universal for OMC/Mercruiser

    Will a 17' mercruiser steering setup will work for a 17' OMC setup.
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