Mercruiser 3.0 water pump replacement
ฝัง
- เผยแพร่เมื่อ 10 ก.ค. 2024
- In this video I hope to show you how to replace a water pump or recirculation pump on a Mercruiser 3.0 boat engine. It was making noise and needed to be replaced before failure.
0:00 Into
1:01 skip intro
2:46 Removing the old pump
6:19 Installation of new
8:24 leak free
Parts used in this video- Buy Here!
▶️ Water pump: amzn.to/3zHM0Tv◀️
Want tools needed for this project!?- Buy Here!!!
▶️ Battery ratchet: amzn.to/3BsynZF ◀️
▶️ Rubber mallet: amzn.to/3BqLeM4 ◀️
▶️ Socket set: amzn.to/3Q3M9Gd ◀️
To watch my previous headgasket videos
Tear down video: • Mercruiser 3.0 Head Ga...
and
Assembly video: • Mercruiser 3.0 Head Ga...
or
Our fun boating trip: • Lake Winnebago vacation
or
Boat Audio on the cheap: • Affordable Boat Audio
Music credit: Music source: www.bensound.com and pixbay- song hold you down
Outro song: No More By Tomh can be found at soundcloud.com under creative commons license: creativecommons.org/licenses/... The song has been shortened to best fit this video
Thanks for watching and consider subscribing!!! - บันเทิง
Thanks for the clip. I’m 69 and wish I had gone to school to be a boat mechanic. Anyway, I’m learning from you, Captain! Anchors away.
Thanks for the compliment. Super glad I could help. I'll have more boating related videos this spring.
@@daleofalltrades, thank you.
The Mercruiser 3.0 Engine is one of the best little engines in my opinion. Long a you winterize/service it correctly they will last for a very long time. Good review for someone looking to service there water pump! Good job!!
Keep up the great work man! I've really been enjoying your videos!
Thanks bud! Slowly but surely.
nice video
Been enjoying your videos . Plus I been having some of the same issues with my 3.0lx
Thanks! Definitely worth the work but dang it's never ending sometimes
Great video, only wish that we would have seen the lower unit running after the fix to see how the water SHOULD be coming out the back. Thanks & Keep up the great work however.
You must not have watched to the absolute end... its shown at the ends screen. Thanks for watching, I try my best!
Thanks man
You bet! Check out my giveaway th-cam.com/video/swMSXAZcGKw/w-d-xo.html
Just bought a bayliner Capri and the water pump won’t even spin like that, it’s been sitting for 13 years, will take it apart tomorrow to see what’s wrong with it thanks for the video!
Good old pump
Coming to your channel and stealing?
Never heard it like that but I like it and it's so true. Keep it real man.
Just found your site looking for info in heat exchanger but found other useful stuff for sure.
Subscribed end will be back for sure.
Thanks
Thanks. Glad there was some info for you.
How do I determine which is bad, the water impeller or the recirculation pump?
Keep vids up buddy. We all learning here
Thanks 🙏
I did impeller and water pump and hoses and thermostat on my 3.0...still not pumping water. Guess it mite be hose in outdrive going through transom. Maybe came unhooked. I love and hate boats lol. If wasn't for the kids...I'd junked it by now lol. But love seeing ur vids of u learning as u go. Keep up the hard work buddy
@@nathanbeckelhymer7031 definitely have to enjoy it to make it worth it. It has been a learning curve on some things for sure.
@@daleofalltradeslearn hard way...only way lol
@@daleofalltrades I love ur vids. I be watching all vids u do buddy. Keep it up man. Awsome job
Hallo, vielen Dank für deine Videos 😊...
Meine Frage, wie hast Du festgestellt das dieses Pumpe kaputt ist?
Ich habe folgendes Problem.... meine Temperatur Anzeige geht auf 100Grad hoch und der dicke Schlauch wird auch warm....das Thermostat und Abgasknie sind neu....das Abgasknie ist auch nur leicht warm.... aber ich habe das Gefühl, dass das Thermostat nicht aufmacht weil vielleicht kein Wasser hoch kommt.....am Auspuff kommt viel lauwarmes Wasser raus....bin über jeden Tipp dankbar.... Grüße Sven
Thanjs! Might have to replace my water pump. 2010 Mercruiser 3.0. Just replaced the Alt belt now it soounds like water pump is making noise. Maybe the belt isn't tight enough so will check that first. I did't notice a gasket with that new water pump. So sealant no gasket?
That's how I did mine. Just sealant
I have a Mercruiser 3.0 that is quickly over heating. I’ve replaced the thermostat and impeller. It’s still overheating. I want to circulate some Evapo-Rust rust remover through the cooling system. The stuff takes some time, but it works like magic, removing rust by an ‘enzyme action’. What do you think it a good way to RECIRCULATE it through the engine? Some way of connecting the intake from the impeller to the output from the manifold?
Your videos are great, simple and clear. Thanks for the quick answers!
If your wanting to recirculate through the system the easiest way would be to get a kiddie pool catch the exhaust water in it and pump it back the the impeller inlet with a pond pump or something... You will run a even higher risk of over heat while doing this as your pumping hot water back in... I have a suspension something is clogged on your inlet or outlet side. The manifold may be so clogged up it may be time to replace... Also if you have overheated pretty bad more than once check your compression on cylinders 2 and 3... These engine love blowing head gaskets once over heated for the smallest amount of time. Good luck and thanks for the compliment
@@daleofalltrades So after trying several unsuccessful water muff tests feeding water to the engine, I finally disconnected the water feed from the outdrive and connected a garden water hose to the water feed to the thermostat housing. And lo and behold, water went through the engine properly, and the engine didn’t overheat!
Bear in mind I already replaced the impeller and the thermostat. So the problem in in the outdrive or the water feed from the outdrive. There is supposed to be some possibility of a kink in the water hose, but I can’t imagine that. I can’t imagine any other error in putting the outdrive together. The only other possibility I can think of is that I put the impeller in backwards/upside down.
@@jimbaranski4687 the impellers are self correcting in a sense so it it was backwards it should have straightened out in its own. I'm willing to beth there is old impeller material stuck somewhere in the feed system of the out drive restricting flow. You have narrowed down the search now you just have to tear that apart and figure out where the issue lies.
@@daleofalltrades Yeah, but the impeller I removed was still in good condition??? I’ll pull the lower unit off again. And check it out. My boat is circa 1996; I don’t see how there is room in the metal housing for the impeller to flip directions; it seemed stiffer then that.
I’d like to find out more information about the path from the Impeller to the engine…
Did you guys ever get it figured out? I had a 3.0 that kept overheating, went thru and replaced everything, pump, impeller, hoses, t-stat, still overheated. It wasn't until I tore the engine down that I found that upon removing the t-stat housing/ hose manifold from the head that a piece of old impeller had found its way up to the head and got lodged right there, it had rust and barnacles or rust bubbles all over it and had clogged that passage completely, come to find out on that block, that is the bypass passage and if it doesn't have flow, the coolant system just doesn't work at all. The actual explanation is more technical but that's the jist of it.
hey Dale first I want to thank you for your videos, very useful.. anyway I recently changed my impeller and thermostat on my 3.0 mercruiser now I'm overheating again?? you think its time for me to change my water pump as well?? or you think I might be having other issues? a little guide will help thanks again
Thanks so much for the compliment and support. Hard to say for sure what the cause is. Have you ran it off the water muffs? If so that will burn am impeller up immediately. There could be a blockage somewhere also. There a few things it could be... Maybe the water pump. I could maybe make a trouble shooting video in the near future.
FIY I will be posting an overheating trouble shooting video Saturday morning, hope it helps you and many others out!
th-cam.com/video/4l21Wyw7IVs/w-d-xo.html. Video available now!
Odd question. Do you use mobil 1 synthetic 10w-30 full synthetic? Great videos!!
I use 25/40 quicksilver 10/30 is too thin for Marine use due to prolonged high rpm. Thanks for watching!
Awesome video and links provided,
Mine has an "overheating" issues. same 3.0 IN/OUT, will try to replace the pump..... Any other suggestions?
Secondly, Boat clicks when turning the key over. When hot or cold, I usually need to "jump start" it by making a connection with the solenoid myself to get it started.
(fuses, wires, relays, starter solenoid, batteries, starter have all been updated and read correct voltage) do you have any other suggestions on what it could be??
The starting issue could be bad cables from the battery and not providing the amperage needed for starting. They get exposed to a lot of water. The over heating issue could be a plugged exhaust manifold also. I also have a video going over many other possibilities for over heating
Be sure to visit my giveaway video th-cam.com/video/swMSXAZcGKw/w-d-xo.html
How do you get the water pump off if it is rusted so bad on outside that pill size pic are falling off . The pump still works but the motor was making noise and I pulled the pully off and saw how bad it looks. It is a 1997 3liter mercruiser that is used in salt water 40 days a year that is flushed at end of each day. That is not what is causing the noise. Is there a way to get the bolts off?
Big hammer and pry bar
Im changing my water pump to and its the original from 89
Does anyone know what the second outlet is on the water pump? The smaller one that is plugged off?
I'm thinking it's for different applications. For automotive use for running a heater core or something. The factory ones are sealed off with no plug it's a reman thing. So these water pumps must be used on a wide range of engines.
That makes sense. Thanks! I do have a heater core up in the cuddy of my boat which is currently disconnected, could be nice for winter fishing... but I troll with an outboard so sort of moot.
How do you know whether its the impeller or the water pump if you are over heating
It's almost always the impeller or a clog. To be sure you can run it on the muffs and disconnect the water feed line too seed it any is being fed in. I have a video on overheating issues
th-cam.com/video/4l21Wyw7IVs/w-d-xo.html
I got my 87 3.0 mercrusier running but its mixing oil and water and spitting it out of the top of the drive unit, any ideas what that would be, my guess a seal broke some where, just not sure where.
Oh boy! Out of the top of the drive unit? I'm not 100% sure what part of it you are talking about. However that's never good. To give you an accurate guess I'd have to see it. But there's a few questions I have.
1. Is it engine oil? Check the dip stick is there water in your oil or is the oils low
2. Was it winterized
3. When you say top of unit do you mean out of the exhaust
I can maybe better help with these questions answered.
100% not good though.
@@daleofalltrades I have a video of it I just wouldn't know how to send it to you.
You could upload it to your TH-cam directly from your phone.
Was it winterized? It's sounds toe like it was a 1st start up since winter? Did the block crack or head crack... That's what I'm afraid of.
@@daleofalltrades okay, I just uploaded the short, so it was winterized. and I don't believe it is cracked, the reason I believe it was a seal is because in the bottom left corner of the video you can see water getting dumped down by the starter so I would think that would just be a broken seal.
Ok just watched it. That's water mixing with your engine oil really bad and it's coming out of you valve cover breather that's spose to vent into the spark arrestor. The water pouring out by the starter is not good either. I hate to say it but I really think you have a cracked block. Or a bad head gasket. But I'm leaning towards a crack somewhere. I'd start tearing it apart and investing. Running it like that will only cause more damage. Cracks can in some cases be repaired. I have a video series on the head gasket also.
Whats the best way to change those belts?
You have to remove one side of the front engine support. Hard to explain without a visual
I am seeing water coming out around that area today also engine stopped running want crank up could that pump be the issue for it cutting off?
Hmmm well water coming out is an issue so I'd start with that and go from there
@@daleofalltrades Thanks for the response also could you help me out on one more thing for you know what the switch is call that cuts the motor off when putting it in gear and out of gear I can not find the name for it anywhere on top of the motor
It's called the shift interrupter switch
Thanks so much bubba you just got a new subscriber.
If the water pump goes can it sound like a metal on metal sound? I think this might be my issue and never thought of water pump...
It definitely can sound like that
@daleofalltrades test would be to remove the drive belt and try and spin by hand? I just winterized it today wish I had of seen your video a day earlier lol
@@derekhodgson2147 yes you don't need to even start it. Just take the belt off and spin by hand. If it's noisy you have your culprit. Also the pulley shouldn't wobble. If it does that also means it's bad.
FYI I'm doing a boating accessories giveaway be sure to check that video out on my page for a chance to win!
@daleofalltrades done and done... can't wait for more videos... and the contest 😀
Oh my, I just found someone like me.
Welcome to the party!
@@daleofalltrades
Carpenter, Electrician and Plummer we are alike. Toss in motorcycles and you are my son. 😂
Is the back of the water pump solid? It looks like behind the water pump is an open hole into the black. Is the water pump a complete shell, or is it open in the back?
What is the flow of the coolant water? If I understand it correctly, the water comes from the impeller in the out drive, through a medium size hose over the top of the engine. Does it go to the water pump on the front of the engine or the thermostat or what? It looks like it goes into the housing below the thermostat where the coolant hoses go from the water pump through the thermostat to the manifold, but that doesn’t make any sense. It must somehow go into the block and then back to the water pump? Hence going up to the thermostat and manifold?
The water pump is one complete unit open in the back with fins. The hole into the back is the front cooling jacket of the engine
@jim baranski at 5:07 in this video there is a pretty clear shot of the back of the water pump. Thanks for watching. Hit that like button!
Just saw your edit/ updated questions. I have a video that may help explain the cooling system for you in greater detail. Check it out here- th-cam.com/video/4l21Wyw7IVs/w-d-xo.html
@@daleofalltrades can you describe the coolant flow?
@Jim Baranski it does enter the t-stat housing 1st. There is a small bleed built into it. It's to direct flow to the engine and manifold as you never want ether running dry. check out my other video with more detailed explanation. th-cam.com/video/4l21Wyw7IVs/w-d-xo.html
What about the thermostat?
This video is just meant to help someone get a rough idea of how the water flows in, and to show how to replace the pump. I have a more detailed video that touches on every part of the system from hoses to thermostat, impeller, ect
Hey where did you order the pump from or do
You have the part number aswell?
All parts I use are always in the video description as well as links. Check it out there. Thanks
Hey did u get the pump and if so did it come with the plug to plug off the small outlet
Hey did u get the pump and if so did it come with the plug to plug off the small outlet
@@daleofalltrades did it come with the plug to plug off the small outlet
@@drillsgt24 yes it comes with the plug already installed.
I need one of those water pump pulleys? Would you have an Amazon number for that? Thanks mine has two extra pulley grooves on it and the one near the pump has holes through it pulleys hit the motor mount so I'll have to cut the pulley or remove the water pump to get it off. they have a few on amazon like yours, say see specs but I don't see the dimensions other than the pulley outer Diameter. thanks
Get the numbers for you engine of the hull or block and look up the part that way
@@daleofalltrades great videos by the way.