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  1. S

    Intermittent engine sputter, occasionally dies

    Back for help. Crate 350 in 1991 open bow, OMC King Cobra. Ran great all summer. Last spring replaced dist Cap, wires, electrical ignition module under cap, and coil. Deep cleaned carb with Soak and Installed kit. I’ve used non ethanol gas exclusively for several years. initially thought bad...
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    New Electric Fuel pump failed after one month

    Would like your feedback. I installed a Carter P4594 electric fuel pump, Low Pressure Oil Switch and a relay to run the pump about a month ago. Last week the pump failed. No warning signs, just quit. I applied 12 volts directly to the pump but it is dead. I don't know if it just failed or...
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    Electric Fuel Pump placement suggestions

    I am replacing an existing non-marine electric fuel pump on a SBC which was not machined for mechanical pump. The current pump is mounted to a metal cylinder on the front of the engine. I just bought a Carter P4594 Marine pump replacement. I know it must be down stream of the water fuel...
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    Power Steering Hose leaking at crimp - Part is Obsolete

    While working on and around the 5.7L OMC Engine I have caused a leak in the power steering hydraulic line running from steering ram to the oil cooler. The leak is coming from the the crimp connection on the hydraulic hose (not the threaded connector). Looks like I may have moved the hose too...
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    Engine miss and new rattle developed in exhaust manifold

    91 OMC King Cobra, 5.7LE Chevy Just rebuilt carb, and reinstalled, changed fuel water separator. Motor started on first bump and bench settings were perfect. It idled as smooth, as good as it ever has. Measured 15-16 inches Hg vacuum and needle rock steady. Took it out for test drive and ran...
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    Electric Choke Connection - Sanity Check

    I have OMC equipped 574APERGD GM engine powering my King Cobra Sterndrive. The Engine is a crate engine and not original. Has Marine carb Holley 650 Electric Choke, Vacuum Secondaries. I removed it to install a kit. I noticed that the Purple/White Wire was connected to the EX terminal on the...
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    What is the difference in these fuel pumps

    I am rectifying a mis-applied electric fuel pump on 91' OMC equipped SBC 5.7L crate engine. Original code is 574APERD with mechanical pump and it was fitted with the wrong electric fuel pump at some point in the past. I was advised by RicardoMarine that the existing pump is for generator...
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    Question about emptying carb during periods of non use

    I have a 5.7L Chevy 350 engine in boat with 1991 OMC Sterndrive King Cobra. I have fought cab for a couple years. I've had recurring issues with fouling of the spark plugs . I've recently experienced engine sputtering and back fires and very rough idle at low RPM, so I suspect my power valve...
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    Engine dies after running

    Not sure of forum protocol but I decided to start new thread because current issue is part of thread "Engine miss at idle, installed new carb kit, carb idle screws do not seem to make a difference" I rebuilt carb and engine runs great when it runs. I took boat out last and ran great for 20...
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    Engine miss at idle, installed new carb kit, carb idle screws do not seem to make a difference

    Hi 93 Galaxie OMC King Cobra, rebuilt crate Chevy 5.7L, spread bore Holley 650b carb Back on the water this spring and pulled carb to get inserts installed to repair carb bowl bolt hole that I stripped last year. Put in new kit. When I go to start engine I have to give it full throttle to get...
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    Newbie: Last trip out smeled smoke, oil pressure dropped, engine overheated

    Hi all My first post so a little back ground. Novice boater, I bougt a used 1992 Galaxie with 5.7L Chevy 350 rebuilt crate motor and King Cobra Stern Drive. Just replaced beat up prop and toolk out for spin. Ran greAT FOR 30 then started smelling smoke. Stoped immeadiately and noticed oil...
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