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  1. Eric 3.7LX Alpha 1

    Need help with my 3.7l mcm 180

    Yeah, your not kidding... lol I had half my plugs blow out on my last 5.4 in my van work truck. Fun times, from what I remember the job is almost all by feel and using an inspection mirror. Cal Van makes a really nice kit to repair the damaged hole. Funny every time it happened, it never threw...
  2. Eric 3.7LX Alpha 1

    Replaced rubber impeller now won't shift to neutral??

    Good luck, report back with how you make out.
  3. Eric 3.7LX Alpha 1

    ‘85 190hp 3.7L blown head gasket

    These engines have a Mercruiser aluminum block mated with a Ford 460 cast iron head. They also use the 460 rods and pistons so they have a big bore and good torque, and fuel economy is good with them. They are very sensitive to overheating. The different expansion rates of the two metals almost...
  4. Eric 3.7LX Alpha 1

    Water in oil

    Get the plugs out and crank the motor over so if there is any water in the cylinder it can get out asap
  5. Eric 3.7LX Alpha 1

    470 side panel gasket

    Google search: MAHLE Original PS33264
  6. Eric 3.7LX Alpha 1

    Whining noise at 3000+ rpm

    You should post your follow up cause for the whine sound in your original post with the question. It will help others down the road with the same problem to see what fixed your issue. Right now that post is left hanging. Glad to hear your all set.
  7. Eric 3.7LX Alpha 1

    What to check / replace on a boat ?

    You ever wash out your flame arrestor on the carb. They get pretty dirty between the plates..
  8. Eric 3.7LX Alpha 1

    Need help with my 3.7l mcm 180

    What's the skinny with the engine? You sent it out to an engine shop and got rebuilt? How about the drive? I didn't see where you posted what was the problem with it being seized?
  9. Eric 3.7LX Alpha 1

    Need help with my 3.7l mcm 180

    I just did my plugs in my engine. I have the same motor but a new model. Some of them are a little tough to get the plug socket on but you need patience. I threaded my plugs in almost all the way by hand with the socket. The correct spark plug socket with a universal joint and different length...
  10. Eric 3.7LX Alpha 1

    Replaced rubber impeller now won't shift to neutral??

    When they are mated, the shift shaft will be straight ahead and the prop will lock when you turn it CCW (while looking at the bow). Also, you have to have the shifter at the helm in Forward and the drive in forward when it gets bolted back up to the bellhousing.
  11. Eric 3.7LX Alpha 1

    Replaced rubber impeller now won't shift to neutral??

    When you mate the two halves of the drive back together, you have to hold the lower half in forward gear the entire time, and have the shift shaft in the upper half pointed straight ahead, while the lower is in forward. To put the lower in forward, rotate the splined shift shaft clockwise while...
  12. Eric 3.7LX Alpha 1

    Water intrusion in mercruiser 170 head

    Are you seeing water or antifreeze under the valve cover? What does the oil level look like? Has it risen at all on the dipstick? Here is a a thread of similar issue you can read up on. Just don't comment on it, it's 11 years old...
  13. Eric 3.7LX Alpha 1

    Mercruiser 170 Timing

    See the attached TSB..
  14. Eric 3.7LX Alpha 1

    1992 3.0L I hear air leak in #4 cylinder

    Yes, he pressure tested the cooling system with air, which lost pressure he believes in cyl 4. A bend valve would not cause the cooling system to leak. If you did a compression test through the spark plug hole, that would indicate a valve issue. Don't be too hard on yourself, no big deal.
  15. Eric 3.7LX Alpha 1

    Boat stalled, later found oil in Bilge... help!

    Check to see if your getting spark. You can get an inline spark tester, or pull a plug out, with it connected to the wire still, hold the plug close but not touch the cast iron head and see if spark kpa.fr the plug to the head. It's easier with the inline spark tester but the 2nd way to check is...
  16. Eric 3.7LX Alpha 1

    Shift Cable Issues= Alpha One Gen1

    If you can shift forward, neutral and reverse on the drive by turning the shift shaft after they were mated.... and also at the engine end of the lower shift cable, the upper and lower were mated together. That is not the problem. Did you measure how much play there is in the drive unit shift...
  17. Eric 3.7LX Alpha 1

    Distributor timing problems

    Ideally you'd want the #1 post on the distributor and the rotor to be lined up perfectly when the timing mark on the harmonic balancer is at your desired initial timing say 4 or 6 or 8 degrees btdc. Whatever it is specified to be. Any post can be set as #1 cylinder when the distributor is...
  18. Eric 3.7LX Alpha 1

    Shift Cable Issues= Alpha One Gen1

    So my question is, when the cable is pushed in to engage forward, what stops the cable? is it the slide bottoming out in the drive? or maybe the lower unit stops the cable. Is the slide length the same between the two from the center where the roller sits to the aft end where the cable enters...
  19. Eric 3.7LX Alpha 1

    Alpha one not fully engaging reverse

    Start a new thread with the new problem.
  20. Eric 3.7LX Alpha 1

    Fuel filter housing port fitting thread pitch ?

    They threads on my fuel water separator housing is 3/8" NPT female thread.
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