4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

Joined
Jun 20, 2008
Messages
9
My 06 4.3 manual says specifically to pull 3 blue drain plugs to winterize, i did that and everything else it says. I lost 2 casting plugs and know have an oil leak. There are really 5 blue plugs that need to be removed, The manual is dead wrong. The new manual now states that there are five to be removed. I have found 2 other people in other forums with the same problem. We are looking for others who have come across this same ordeal to start a united front and try to get merc to make right on their mistake. If you have had this problem, or know anyone that has please get in contact with me. Merc is saying we should get a service manual, however, they should be responsible for bad information in the original owners manual. No info at all is way better than bad info. There is a few of us who are looking to shell out 5 or 6 grand for this repair that is not our fault, my boat is still under warranty and is totally useless unless we can get together and force merc to make this right. I am confident we can if we join forces and work together. I am sure the last thing they want is a handful of new boat owners taking this public and eventually to court if need be. Thanks and please tell me all you can on this subject, i need all the help i can get.
 
Last edited by a moderator:

JustJason

Vice Admiral
Joined
Aug 27, 2007
Messages
5,321
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

1. your on crack
2. manuals are written from mechanics.... not laymen
3. go to mechanics school......
4. even factory service manuals still have mistakes... that's why there are supplements and addendums... as well as service bulletins
5. you don't need a manual to winterize an engine
6. even if you got 3 outa 5.... if you pulled all your hoses and poured antifreeze into everything until antifreeze came out of the drains you probably woulda been ok.
 

RJLeuwen

Seaman
Joined
Jun 19, 2008
Messages
69
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

Are you sure the block is cracked?
Is the oil over full on the dipstick?
Where is the oil leaking from?
I have seen the 4.3L push out casting plug before without cracking the blocks.

RJ
 
Joined
Jun 20, 2008
Messages
9
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

Jason, no im not on Crack, im new at this stuff and no i am not going to mechanics school, it wouldnt pay enough in the long run. I went by what the manual says, and lost 2 casting plugs, had them put back in and now i have a gnarly oil leak, in your expert opinion, what do you think is wrong?
 
Joined
Jun 20, 2008
Messages
9
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

RJ, no im not sure it is cracked, i just now i have a new boat that is leaking more oil than Iraq. If it was overfilled, would it drip oil from the bottom of the engine, i am not sure, just learning this stuff, and by the way, thank you for being polite.
 

tommays

Admiral
Joined
Jul 4, 2004
Messages
6,768
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

If you pulled all 5 and they were clogged with sand is that in the manual :confused:
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,089
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

If you pulled all 5 and they were clogged with sand is that in the manual

Ayuh,....

You double posted this question last night,+ I guess I posted on the 1 that got deleted...
Anyways,....
As I said there,....
Everybody I know is throwing Away those multi-port drain systems,+ installing brass Drain Plugs....
Just by it's design,+ function,....
These things are going to Fail......

And,.... As far as your Class Action Lawsuit,.....
I Agree with Capt. Jason,......
1. your on crack

You did your Own Winterization,..... Only You are Liable......
Your incompetence is Not Mercruiser's fault.......
 

Dakota47

Senior Chief Petty Officer
Joined
May 22, 2007
Messages
722
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

You will never get a dime.:mad:. Now on to your problem.. do you have water in the oil?? if not you can fill the crack where the oil is leaking with jb weld.. or buy a new motor.. good luck..
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

There are only 3 blue drain plugs ......... On Fresh Water Cooled engines, but there are 5 on raw water cooled engines. You probably read the wrong section of the manual as it explains how to do both in the same manual.
 

bjcsc

Lieutenant Commander
Joined
Jun 1, 2006
Messages
1,805
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

Hello granthatchett. Welcome to iboats, BTW, even though it has been less than 'warm' so far ;). Forget about Merc, you'll be wasting your time. Don't forget the legal outcome mostly depends on who has the most money.

Let's change this thread to how we can help you fix what you've got. A bunch of guys here are marine techs (even some who have posted to this thread) and your energy will be much better spent trying to fix it. If you post details about your engine (full model#, serial#) and then describe what's going on it would be a good start...
 
Joined
Jun 20, 2008
Messages
9
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

BJ, thanks in advance.

Heres what i got. 4.3 alpha 1.7r s/n ow624400, now heres the story.
I bought the boat new in July of 06, used it for the remainder of the season and in Sept. I winterized it according to the manual. Three point manual drain system, boat out of the water. In spring i summerized with muffs and found a casting plug had came out. Had it put back in and engine inspected for damage, no damage, wrote it off as a fluke. Merc paid to have the work done. This past year, winterized again, very very carefully, poked wire in the drain holes, blew compressed air in them as well, removed cooling hoses, and blew air, drove the boat home from the lake with everything opened up for over an hour. Did the rest of the winterization stuff, parked it till this spring where i found during summerization, 2 casting plugs missing. Paid to have them put back in and engine looked over good, no freeze damage, no water at all, anywhere. After a day on the lake, i notice oil in the bilge. Temp never got over 170, always good oil pressure. When i got the boat home cleared out oil from bilge, drained some from engine to see if its milky or any water, none at all. no milkshake on dipstick. but there is a pretty good oil leak. I am baffled. I assume its due to the freezing that may have taken place. My manual has 2 different types of drain techniques. 3 point manual and single point air actuated. The 3 point system mentions 3 blue plugs, my boat has 5 i now know. I am assuming thats what is causing my probs, not knowing that prior and leaving 2 in during the drain process. The manuals have been changed this year to include a new multi point drain system, that mentions all 5 plugs. My dealer knew about the manuals error. But still charged $315, to put in the new plugs which i am arguing to merc about and it sounds like they are going to pay again this year. Any way, a new block might be a little more work to get them to cough up. I do have a couple other folks in the same boat who i am corroborating with as to make more noise. Its amazing what a nice letter to investor relations can do. Back on to the point at hand. I am not sure where the oil is coming from, i assume its from freeze. But i dont know. It may have been overfilled, dealers make those mistakes, but i dont know they never changed the oil, only put in 2 casting plugs this year. . It starts dripping when it gets up to temp and is a real consistent drip, that looks like it is towards the front of the engine, its really hard to say though, i can only see where it is leaving the bottom of the block for the bilge. This is my first boat, i went out on a limb to get it, know i am afraid i need a new engine which is just totally outta my income range, its getting hot and my wife and kids are wondering why we arent going to the lake in our nice new boat. I appreciate all the help and knowledge you can give. Thanks again.
 

RJLeuwen

Seaman
Joined
Jun 19, 2008
Messages
69
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

As long as you have no water in the oil :) You lucked out TWICE!!!

Now you need to find out exactly where the oil is leaking from.

Merc will most likely cover an oil leak under warranty as long as it's not a loose oil filter or missing gasket on the oil filter.

That engine has drain hose attached to the bottom of the oil pan that is designed to be connected to the hull plug in the back of the boat, if it's not connected to the hull plug then the hose should be laying along the port side of the engine. There is a brass plug in the end of the hose make sure it is tight.

Find that leak and you should be good to go!!!!!!!

RJ
 
Joined
Jun 20, 2008
Messages
9
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

Yes, that hose is in good shape, and the plug is tight. I had hoped that that was it. So if i understand this right, if there is some freeze damag it will only effect the water side of things, and not the oil side? I am almost 100% positive that there is no water in oil. I drained some out of that hose, and the dipstickhas nice clean oil on it. the oil leaking out is nice and clean also. I am goin to drain it all today to make sure though.
 
Joined
Jun 20, 2008
Messages
9
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

yes, the manual does say to clear the openings with a wire.
 

Limited-Time

Vice Admiral
Joined
Mar 30, 2005
Messages
5,820
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

Yes, that hose is in good shape, and the plug is tight. I had hoped that that was it. So if i understand this right, if there is some freeze damage it will only effect the water side of things, and not the oil side? I am almost 100% positive that there is no water in oil. I drained some out of that hose, and the dipstick has nice clean oil on it. the oil leaking out is nice and clean also. I am going to drain it all today to make sure though.

There are several types of freeze damage possible. I'll address the two that I think pertain to your issues.

One would be a crack between the water jacket and an inside surface of the engine. This type is evident by the presents of a large water in the oil. When the engine is run the water and oil mix and create a Milkshake looking mess in the crankcase. It will be evident on the dip stick as well. This type of crack also increases the "oil level" in the engine. In this case most times the block is scrap, and replacement is the only option.

The second type is a crack between the water jacket and an outside surface of the block. In this case water will flow out of the block and into the bilge area of your boat. The good news about this type of damage is that it may be repairable with some type of filler, such as JB Weld.

If you are not seeing either of these issues you have as stated earlier, dodged a bullet.

As for your oil leak, you need to find the source. Do whatever it takes, disassemble the engine compartment, use mirrors, talcum powder, stand on your head in order to get a better look.................whatever. Just find the source and report back (with pics, if possible). Then you can go from there.
 
Joined
Jun 20, 2008
Messages
9
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

Hello, and thanks for the help Limited Time. I think i should call myself limited dime. Haha. Any way, i really appreciate you helping me on this. The oil leak is, from what i can tell, coming from somewhere around the area of what i would call, behind the fly wheel. It is running down and dripping off of the bottom of the engine. There is a thin tabwith a an female type electrical plug that might be for some type of diagnostics, i am not sure. I sure dont think anything is cracked, it just looks like an area where a few metal surfaces make contact and possibly with gaskets and seals of some sort. I have no idea what a main seal is, or a rear main seal is, but if you face the engine from the front of the boat and look down at the serpantine belt, the lowest and largest pulley, the shaft going into the engine area, the leak is from somewhere right in there. Man i hope this helps, and really hope its not freeze related, and hope that it is covered under my warranty. Thank you so much for your help. Cant wait to hear back. I am thinking maybe tomorrow of putting in some of that engine stop leak to see what that does. What do you think. Thanks again. Grant
 

thumpar

Admiral
Joined
Jun 21, 2007
Messages
6,138
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

I would suggest getting a professional opinion. Go to an authorized center and have it looked at. Worst case is that they say you owe them a diag because it is not covered under warranty but at least you would know what the problem is. It could be something that is covered and they would just fix it.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,089
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

I am thinking maybe tomorrow of putting in some of that engine stop leak to see what that does.

Ayuh,.....

If that $h!t Doesn't Void your warranty,..... It Should......

Snake Oil is Still Snake Oil....... Get it fixed,... Right....
 

PowerAddict

Chief Petty Officer
Joined
Aug 8, 2007
Messages
418
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

Not a marine expert by any means, but I know engines. If its coming from the back by the fly wheel, It seems to me thats a rear main seal leak.

Maybe someone else knows about some freak 4.3 marine oil leak from somewhere else, But I've seen steady drips like that from rear mains that only get to steady pours, which can lead to, "I don't know what happened, it was running fine, and then it just stalled hard, and now the starter won't turn it over..."

I'm sure you'll get some one who's way better to respond shortly though, everyone on this forum is really great!


oh yeah +10000 on what bondo said, I woulnd't do that on A. that fresh of an engine that isn't in a 1980 chevette which has a milk crate for a seat and B. on something that still under warranty!
 

Limited-Time

Vice Admiral
Joined
Mar 30, 2005
Messages
5,820
Re: 4.3 alpha manual says 3 blue drain plugs but there are 5. Cracked Block.

.........................The oil leak is, from what i can tell, coming from somewhere around the area of what i would call, behind the fly wheel. It is running down and dripping off of the bottom of the engine. There is a thin tabwith a an female type electrical plug that might be for some type of diagnostics, i am not sure. I sure dont think anything is cracked, it just looks like an area where a few metal surfaces make contact and possibly with gaskets and seals of some sort. I have no idea what a main seal is, or a rear main seal is, but if you face the engine from the front of the boat and look down at the serpentine belt, the lowest and largest pulley, the shaft going into the engine area, the leak is from somewhere right in there. Man i hope this helps, and really hope its not freeze related, and hope that it is covered under my warranty. Thank you so much for your help. Cant wait to hear back. I am thinking maybe tomorrow of putting in some of that engine stop leak to see what that does. What do you think. Thanks again. Grant

I am a bit confused by your references.:confused:

The flywheel for your reference is located at the back of the engine. Its covered by a bellhousing, and is not visible. Id'ing an oil leak in that area would be a PITA. at best. The oil would be leaking in an area at the back of the engine.

The part by the front of the engine, just behind the lowest and largest pulley is called a harmonic balancer (automotive term) or I think a dampener in marine terms. That area of the engine contains the timing gear cover, (with several gaskets and seals) and front crankshaft seal, any of which could be leaking. FWIW it may not be connected to the freezing issue. In any case it may be worth a trip the the marina for further investigation. Especially if your not comfortable digging deeper yourself. BTW forget the "Fix in a can" that sheet is only good for separating you from your hard earned $$$$$$. Good luck.
 
Top