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    Won’t stay running

    put a voltmeter or test light on the wire connected to the switch near the oil filter. if you have power to that wire with the key on, connect it to a ground and see if the fuel pump kicks on. If not, then replace the switch. If there's no power to the oil pressure switch with the key on, you've...
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    4.3 motor swap with truck engine

    yeah i was referring to the heads
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    Color me noob- Finding common leaks

    If you tell us what year, engine, and model it will help too
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    Knock Sensor Faulty?

    Ever heard of Occam's Razor? It means when looking for an answer to a problem, the simplest explanation tends to be the right one. In other words, if it looks like a duck... Your symptoms are classic lack of fuel
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    4.3 motor swap with truck engine

    Salvage yard. Basically any full size Chevy or GMC pickup or van and some astro vans and S10s from 1996 to 2014 with a V6
  6. I

    4.3 motor swap with truck engine

    Doesn't matter. just use the flywheel from the current motor
  7. I

    Knock Sensor Faulty?

    Why do you think the timing is being retarded? Did you put a timing light on it? Or are you basing this on symptoms?
  8. I

    4.3 motor swap with truck engine

    Just use the intake you have if keeping old heads automatic trans uses a flexplate, manual uses flywheel, marine uses flywheel You will be using all your pulleys and accessories so, no.
  9. I

    4.3 motor swap with truck engine

    Copy. Wasn't sure if it would work but can a thinner cover be used to allow clearance for the older water pump?
  10. I

    4.3 motor swap with truck engine

    If the water pump doesn't fit because of the timing cover, the timing cover from the old engine can probably be used. It will be metal, and not stick out as far.
  11. I

    1992 Cobra Outdrive Trim Sensor

    With the drive up, the arm won't touch. With the drive all the way down, does the arm touch the gimbal?
  12. I

    Won’t stay running

    The yellow wire on the ignition switch supplies power to the starter solenoid when you are twisting the key to crank the motor. The oil pressure switch is not the same as the oil pressure sender. The sender has 1 wire and is located on the top rear of the engine by the ignition coil. The oil...
  13. I

    4.3 motor swap with truck engine

    You can use your 1987 cylinder heads and intake with the donor if you like but you will get a significant power increase from the vortec heads. They will require a new intake manifold. Make sure you get one that fits your carb, be it 2 or 4 barrel spreadbore or squarebore. If you are going to be...
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    No power to fuel pump or choke 5.0 gl pefs

    Oil pressure switch?
  15. I

    4.3MPI Risers

    Without being able to fully test it there could be more problems than just manifold too
  16. I

    4.3MPI Risers

    That is a deal breaker for me. Unless you are getting it for a great price and are fine with putting time and money into fixing it or you have an ironclad warranty or return window.
  17. I

    Mercruiser 5.7 won’t make power

    Well you sure work fast. Can't wait to hear how it all works out
  18. I

    4.3MPI Risers

    Definitely looks like they need new gaskets as they have been leaking. Any leaks that you could see? Freshwater or salt
  19. I

    1991 carburated 4.3 fuel pump output.

    Just a guess but I would expect the fuel pump to be capable of 30 gallons per hour which is more than you need but without spinning at normal rpms it's hard to gauge. Clean or rebuild the carb first. It will need it.
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    Ford 302 starter issue

    You may have a faulty starter but it sounds like you still have a bad alternator or maybe a bad voltage regulator. Battery sizzling is usually overcharged or could just be bad as well. Starter engaging without the key is a wiring problem unless the solenoid is stuck. Sounds like you have...
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