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    MASSIVE oil leak mechanic can’t find

    HI Lou, Thanks for the idea. Mechanic had found a point where the intake manifold wasn't completely sealed along that China wall and fixed that up. But I'll check again. Can't hurt. Cheers Keith
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    MASSIVE oil leak mechanic can’t find

    Oh God could it be a cracked block?!?!
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    MASSIVE oil leak mechanic can’t find

    Hi all, I placed 4 aluminum cooking pans in the engine bay. After 5-6 minutes at 2800 RPM the REAR DRIVER'S side pan was filling up. So I made "cupcakes" from tin foil, and put them in my tinfoil pan, then placed paper towel in each cupcake so I could localize the leak within about 4 square...
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    MASSIVE oil leak mechanic can’t find

    By the way, if the oil sensor is the chrome thing on TOP of the engine right beside the distro, about 2” diameter and 2” high with a wire on the top, it is completely clean all around that area And below.
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    MASSIVE oil leak mechanic can’t find

    HI Scott, Thanks for taking the time to help out. I was just under there with a camera and do not see any rust on the pan. I also went around with fresh paper towel. Top of motor near distro is clean. I can’t find any as I go down the port rear of the motor. In fact I can’t find any fresh oil...
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    MASSIVE oil leak mechanic can’t find

    1988 OMC 4.3 Cobra. Runs like a Swiss watch. Tons of power in my 16’ boat. Leaks engine oil at a rate of about 1L per hour of driving under load, tubing, water skiing etc. Oil leak is all inside. Boat fills with it and I have to drain into a bucket so I don’t pollute the lake. Remedies so...
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    OMC 4.3 occasionally, mysteriously dies, then starts fine. Electrical issue.

    Hi there, -1988 OMC Cobra. Runs like a top. However, it just randomly dies every 5-10 min. when we're out boating. -Then it starts immediately with no issues or hesitation. -The reason we know it's electrical is that we ran it out on the lake with the engine cover and a multi meter hooked up to...
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    4.3L dies as if key shut off when hot.

    Hi folks. Thanks in advance for any insights here. The Engine: 1988 OMC cobra 4.3L V6, 175HP(I believe). 2BBL carb. Manual fuel pump. Old school all the way. In the last month it has had a complete tune up, carb kit, and even a starter. When operating, oil reads about 45PSI. Temp about 160 or...
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    Massive clunk on hole shot. Mechanic can't find issue. Please help-thanks.

    Hi there, First of all, thank you to those of you who lend your valuable time to help the rest of us work through our problems. 1988 OMC Cobra, 175 Horse on a 16.5 foot Campion, 2BBL Carb. We do skiing and tubing. On hole shot, we put it into gear, listen and feel that it is engaged, then...
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    4.3L OMC-Hesitates on hole shot, sometimes at 1000-2000RPM

    1988-4.3L V6 with cobra leg. 2BBL carb. 16-1/2' bow rider. We tow skiers and tubes. Two months ago my boat was really running rough. I put in a new carb kit-I'm not an expert, so I just took it apart, cleaned it, and put back together with the new parts, and cleaned the fuel filtre. After the...
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    Where might one find published weight of OMC motor and leg?

    Hi there....again. Does OMC publish it somewhere? I'm curious about the weight of my boat with motor and leg( I want boat only, so I can't really take it through a weigh scale.) I found out the specs on just the boat, but now I'm looking for information on the leg and motor. It's an OMC 4.3...
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    Occasional clunk from leg on hole shot

    Hello all, I'm new here, so thank you in advance to those of you who freely share your expertise. I have a 1988 OMC 4.3l with an OMC cobra leg-in a 16-1/2' Campion. The engine runs well and the leg seems to perform well, but we've noticed an issue lately. I tow skiers. I put it into gear at...
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