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  1. Lou C

    One manifold hot (5.0)

    If it burned up an exhaust shutter then it can burn up the rubber exhaust hoses that connect the elbow to the exhaust down pipe and Y pipe. If that happens water can leak or flood into the boat depending on how hot it gets. Fix it now, would be my recommendation. Those hoses can look OK on the...
  2. Lou C

    One manifold hot (5.0)

    Might want to start with the thermostat housing make sure you get equal flow out of both sides of it, then if that's good move on to the manifold/elbow on the side that was hot. Just pick up spare gaskets before hand. These raw water cooled systems can pick up a fair amount of crud depending on...
  3. Lou C

    5.7 omc stalling while shifting

    Here's a couple of pix to show what's what with the design of the Quadrajet...
  4. Lou C

    5.7 omc stalling while shifting

    Well if you have the standard OMC set up, there is a large cannister filter mounted near the mechanical fuel pump and there is really just a screen filter in the carb inlet of the Quadrajet. I would fix the leak, for sure, if you have the cannister water separating filter, you probably can run...
  5. Lou C

    5.7 omc stalling while shifting

    It's hard to say not seeing what it's doing but with the OMC Cobra system, the ESA will lower the idle speed from approx 600 to 450 rpm when you shift from FWD or REV into neutral. If the engine is not in good enough tune to run that slowly then it can stall. So you need to address any carb and...
  6. Lou C

    MerCruiser 5.7L Low-ish Compression

    And also if you have an advance timing light check the total timing advance against Merc's spec.
  7. Lou C

    One manifold hot (5.0)

    Well perhaps the elbow started clogging first, then water flow was reduced on that side and the hot exhaust gas with not enough water flow melted the flapper resulting in what you found. I leave an IR temp gun on the boat so I can take temp readings at idle, just after coming off plane, to keep...
  8. Lou C

    MerCruiser 5.7L Low-ish Compression

    Yes & yes
  9. Lou C

    MerCruiser 5.7L Low-ish Compression

    Valve job on the small block Chevrolet is about the easiest ever. You can have your heads redone if they are other wise in good shape. If there is excessive corrosion or cracks in the exhaust valve seat areas (common after bad overheating) then buying a reman set makes sense. That’s what I did...
  10. Lou C

    MerCruiser 5.7L Low-ish Compression

    Those questions are hard to answer, you can try to run it paying close attention to ignition timing & fuel mixture (not too advanced, not too lean) and contrary to what many say I run at least 89 if not 93 octane fuel. The other thing that helps is to make sure the engine can reach the specified...
  11. Lou C

    Going from surge brakes to no brakes

    I don’t know for sure how lawyers go about proving negligence but if both Ford & state regs require trailer brakes above a certain weight & you’re above that it may be easy for them to find liability on your end. Especially if you rear end someone…
  12. Lou C

    MerCruiser 5.7L Low-ish Compression

    The causes of valve seat & stem corrosion: Not fogging the engine for long term storage & being stored outside in a damp climate Not maintaining the exhaust system to prevent water from leaking back into cylinders Leaky head gaskets that let water in a cyl (I had this one due to a previous...
  13. Lou C

    87 Mercruiser 205 V6 losing power past half throttle

    4-6 psi
  14. Lou C

    1996 Bayliner 1952CN, won't start after winterization - new boat owner

    about winterizing, yeah, I hate those vids, with bad information I always manually drain and poke all holes, make sure its all out, replace plugs, coat threads with gasket sealer, then back fill with my mix of 50/50 Sierra no tox antifreeze & water. Cheaper than the -100 I used to use and better...
  15. Lou C

    1996 Bayliner 1952CN, won't start after winterization - new boat owner

    That is a simple carb but if you've never done it before, you might be better off finding a shop that specializes in classic cars and taking it to them Watched the other vids, some ideas: sticking intake valves may be causing misfires stuck float, could be flooding engine, when you open throttle...
  16. Lou C

    1996 Bayliner 1952CN, won't start after winterization - new boat owner

    that misfire suggests to me somene installed new wires and didn't get the order right! my brother did the same thing on a Subaru about 35 years ago. I asked "did you follow the correct firing order?" That was it!
  17. Lou C

    Going from surge brakes to no brakes

    If you have discs & want electric control you have to go to electric over hydraulic brakes which is a very good but expensive & complex system. I have had good luck with galvanized surge drums. I have the same actuator since 2004 (Tie Down model 66, does not clunk) & I usually replace the...
  18. Lou C

    1998 5.7 srartup

    Make sure the choke pull off is functioning you should not smoke on a cold start
  19. Lou C

    Winterize

    I always replace the plugs when when I winterize & cost the threads with Evinrude gasket sealer. Check for leaks at initial start up in spring. If you want relatively trouble free boating it’s wise to learn to look for. A little prep work goes a long was…. “trust…but verify”…Ronald Regan
  20. Lou C

    87 Mercruiser 205 V6 losing power past half throttle

    I think that’s a Quadrajet carb the other filter is in the fuel inlet where the fuel line enters the carb. Be careful with the fittings you need a large adjustable wrench to get it out. That filter is usually just a screen in most marine applications; GM used a paper filter there in auto...
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