Recent content by texans543

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    Mercruiser 470 Coolant Loss and Milkshake Oil

    Ouch! Sounds like you have a head gasket leak to me. Also, looking at your compression each should be with in 10% of each other. You might have a cracked block, Start from the top of the motor work your way down.
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    New Motor Vibration issues at low RPMs

    Whoever put the last motor in Put this module in. I looked up the specs and it’s the wrong timing curve for this motor. I saw the u-joint conversation today. I might do that since they are cheap.
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    New Motor Vibration issues at low RPMs

    All new gimbal bearing, u-joins looked okay. I think a misfire could be possible but it’s only doing it in gear, that’s my concern. I am going to pull the out drive and check the alignment again. It could have shifted or something strange. I did check the alignment 10 times but who knows. As far...
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    New Motor Vibration issues at low RPMs

    Ha! I pulled it and it’s not even what I thought it was. It’s for a 7.4 bravo. I am not sure if that’s why I was having timing issues. I am the 3rd owner. I am posting on eBay to see what I can get for it. The vibration is only in gear. All compression is good. I am waiting on some parts to...
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    New Motor Vibration issues at low RPMs

    Yeah, no idea why he had a 26P on it, I have a 21 on order, should be here friday.
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    Crank but want start Mercruiser 5.7

    Have you checked the kill switch boat throttle, is it in the run position.
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    Mercruiser 3.0 backfire

    This sounds like a timing issue. Check to see if the distro bolt came loose and it moving under load. Check your cap to see if any rust or corrosion is under there. look at your wires where they can be getting hot and arcing, then last what comes off my head it timing chain.
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    New Motor Vibration issues at low RPMs

    Hmm I am intrigued. When I did a small break in on the motor in the driveway I double checked all the valve lash, I have a spark tester so I can check all of the spark plugs that way, still a pain in the you know what. I am going to be putting in the Voyager Ignition Kit, as I hate this...
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    getting rig of the carpet.

    I am watching this post. What I am looking at is https://www.seadek.com/ We have used this in the past on a different boat. The problem is the glue on the plywood, you have to clean, sand, clean, and seal the wood then apply this. But i love using this stuff.
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    New Motor Vibration issues at low RPMs

    Hey group, I put in a new to me motor in a 2000 Crownline 180. I put in a 5.7 GM 638 block, I completely rebuilt the block with all new rings, bearing, and so on. The old Camshaft was use since it was the marine one. It has a crappy thunderbolt V, that I am waiting on replacement parts so I...
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    E-TEC looking to change prop pitch

    I would use the website below to give you more info. That way you are not spending cash on something that might not make things better. https://www.mercurymarine.com/en/us/propellers/selector/#!/step-one
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    5.7 Mercuriser Cracked Block

    Thank you all for the info, I bought the motor last night. It’s in great shape. I am going to do a minor rebuild on it, swap over my 4bbr, and let her eat!
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    5.7 Mercuriser Cracked Block

    Scott06 great info. I called them today and they are at a 3 to 4 month lead time!!! I have called many and they all say the same thing. Not I did find a used motor, "same block" for super cheap today, $200 bucks in a running SUV. I think I am going to check that out then take it to get...
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    5.7 Mercuriser Cracked Block

    Ahoy Mates, I have been trolling this form for a while, read a lot of great information. Here is my issue, New to me 2000 Crownline 180, Know bad motor, very sad….a young guy first boat did not winterize it. It's a 5.7 Mercuriser 4 BBL with the 638 Block. Whoever owned this boat first spent a...
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