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Recent content by swc65

  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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    Engine miss and new rattle developed in exhaust manifold

    No, the distributor is Pertronix, not a retrofit kit. I suspect it was replaced when the crate engine installed. My OMC manual references Prestolite Electronic Ignition. Your comments above are what cause me to think the ignition spark advance is co trolled by the module in the distributor...
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    Power Steering Hose leaking at crimp - Part is Obsolete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

    I think it’s much ado about nothing as I mis measured my balancer. I pulled the back seat out of my boat so I can actually see what I’m doing. I measured the balancer accurately, and verified that the marks on the timing tab are a match for my balancer. So I think I can trust my TDC mark on the...
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    Engine miss and new rattle developed in exhaust manifold

    Gotcha. So would the rattle just be the springs vibrating? Is it detrimental to motor to run it while verifying timing? Looks like I’ve got so work to do there but have to get some parts to find TDC. Is the damper plate between flywheel and the engine? See pic from my OMC manual. I don’t see...
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    Engine miss and new rattle developed in exhaust manifold

    Not quite. Here is mine. There is no magnetic wheel. Just the white plastic which what appears to be embedded with magnet or some sort of wheel. You can see the “teeth” through the plastic. i don’t know is the linked procedure is valid for my electronic Module. Pertronix is on west coast so...
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    Engine miss and new rattle developed in exhaust manifold

    Here is a pic of the what they call the grommet. I’ll find a procedure to test the module. If it tests ok then I don’t have to remove it but at some point in time I know the module will need replacing.
  10. S

    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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    Question about emptying carb during periods of non use

    I have having difficulty identifying the correct switch to use. Can you recommend one? I have scoured the internet looking specifically for a Marine grade SPDT. Low Oil Pressure Saftey switch. All I find are three prongs and not two. Can an automotive switch be used? I have read multiple posts...
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    Question about emptying carb during periods of non use

  13. S

    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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