Search results

  1. Lou C

    OMC manual/service/how to

    Agreed I've had the 4.3 Cobra for 18 years and used the factory shop manual many times. Paid for itself very quickly!
  2. Lou C

    Gas/oil sheen run-off from motor

    While you're looking at the carb, are you sure that the choke is opening? It should be a Holley carb either a 2 or 4bbl and they have electric chokes. If they don't have a constant 12V source the choke will close due to the tension of the bimetal spring and will greatly enrich the fuel mixture...
  3. Lou C

    Winterizing a 2020 4.3L duoprop

    Yes its not part of winterizing per se but I'd be surprised if its not in another part of the maintenance manual. Don't they specify replacing the bellows? I'd be shocked if they don't. Every 5 seasons normal maintenance. I know older Volvo manuals did say to remove the drive at the end of each...
  4. Lou C

    Where to pick up power for electric choke?

    What you will find is that the AC tap puts out both AC volts and DC volts, but the choke will work fine that way.
  5. Lou C

    Winterizing a 2020 4.3L duoprop

    well...that can eventually cost you...big time...and its all in Volvos & Merc's maintenance schedule. if you never remove it, and the bellows gets a small leak...it will rust up the gimble bearing and u joints, and then...it may NOT come off...that time...you were lucky....I'd say in freshwater...
  6. Lou C

    Winterizing a 2020 4.3L duoprop

    I didn't at first either but when I realized I could do it myself first I built a stand with casters then a few years later I bought an outdrive jack that makes it easy. If you boat in brackish/salt water its a necessary part of maintenance to avoid problems. I've been able to make the same...
  7. Lou C

    Winterizing a 2020 4.3L duoprop

    The 2 stroke mix is pretty standard for EFI engines and has been recommended for a long time. After you’ve done it a few times you have your own routine for winterizing and it goes faster. I do the engine one weekend and then pull the drive the following weekend and check the bellows, gimble u...
  8. Lou C

    Where to pick up power for electric choke?

    OMC and Volvo engines all used the AC tap on the alternator. This is advantageous because it only puts out voltage when the engine is running. Otherwise as soon as you turn on the ignition the choke will open up, probably too early for good drivability. I was going to convert my Quadrajet over...
  9. Lou C

    Looking for bare engine block with pistons

    sorry about that, I totally forgot that I had another account because it was 18 years ago!
  10. Lou C

    Re; Broke spark plug

    That joint between the elbow and the manifold is something you have to monitor, if you see rust trails on the outside it is time to drain the manifold and inspect the water ports for rust and chunks of cast iron coming off and pitting on the sealing surfaces. I installed these 3 seasons ago...
  11. Lou C

    Switching from Volvo Penta 4.3 to Mercruiser 4.3

    I have a Teleflex control for my OMC which I have yet to install. But looking at the instructions what I learned is that the OE controls usually work only on that make of engine. OMC and Merc seemed to have controls that were specific to their set up. But, if the Volvo boat came with that...
  12. Lou C

    Winterizing a 2020 4.3L duoprop

    You really should be able to get a workshop manual. It does not explain how to winterize in the owners manual? In any case you need to get all the raw water out of the raw water side. Heat exchanger, impeller housing, coolers for p/s and fuel and hoses. If I had it in front of me I might be...
  13. Lou C

    Oil Pan (Sump) Bolt Torque Spec Needed

    Like a valve cover you get it nice and snug but not so tight that it distorts the pan rails or gasket. Every few years when I have all the seats out etc I check the bolts on the pan, timing cover, bolt that holds on the dipstick tube, starter bolts and exhaust bolts.
  14. Lou C

    Re; Broke spark plug

    Yep looks like you found the right mechanic!
  15. Lou C

    Looking for bare engine block with pistons

    Over the winter will be doing the other side, and replacing the old OMC control with a Teleflex one I bought some years back....
  16. Lou C

    Bi-annual Compression Test - Merc 7.4 MPI

    Here's a size comparison of both types.
  17. Lou C

    Protect engine from water damage after cracked intake manifold

    take a look at this pic.... see the drain plug is missing...take the plug out and let it drain...coat the threads with gasket sealer like Permatex Aviation...no more worries.....
  18. Lou C

    1989 5.7 OMC engine turns but won’t fire

    If you can post up a pic of the distributor close up. I have one of these and as long as it is not worn out they are very simple to service with new points, condenser and cap.
  19. Lou C

    Wet and Dry Joint Questions

    Yes they do and they can look fine from the outside, but be bad under the rubber elbow exit hoses... These are not mine but shows you that even though the water ports etc don't leak, the elbow on the left would allow the engine to suck back water... keep an eye on that manifold to elbow joint...
  20. Lou C

    Bell-ringing noise when starting engine ... what would cause this?

    Agreed it sounds like slightly loose starter bolts, make sure that when you installed the new starter you used the right bolts. If they were just slightly too long they can allow the starter to shift and that eventually will break a starter bolt causing a lot of extra grief and work. I recently...
Top