water in cylinders
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=6189
Printed Date: November-30-2024 at 5:53pm
Topic: water in cylinders
Posted By: 68lemans
Subject: water in cylinders
Date Posted: April-02-2007 at 4:20pm
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I put a new starter on my 351 H/M 1972 Marauder on friday night hocked up the hose in the drive and she fired right up I ran the boat for about 10 or 15 and then turned off the hose and then turned off the boat. I then put the boat back in storage. I got it out on sunday and it was complettly ceased up so I pulled the back two plugs out on both sides and water powered out :( so I turned it over pumped all the water out and fired it up and checked the oil, it was as clean as the day I put it in. So we took it to the lake and ran it checked the oil and watched the temp, we ran all day no problems nothing in the oil and as far as I know no water in the cylenders. I will go down to the barn and pull the plugs and see if there is any water in them. So if there is where do I start looking? If there is no water anywhere, do I just forget that ever happened or do I investigate further? I need some advice.... I had a similer situation happen last year but the hose got left on when the boat was not. I figured i just filled the hole thing, scary but same thing no water in the oil. I think I am done with the hose in the drive. What do I do? This is not how I wanted to start the season....
Thanks Brad |
Replies:
Posted By: 79nautique
Date Posted: April-02-2007 at 4:41pm
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back two spark plugs?
------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: mackwrench
Date Posted: April-02-2007 at 5:00pm
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You could have a cracked exhaust manifod(s)? ------------- NO LONGER A MEMBER |
Posted By: reidp
Date Posted: April-02-2007 at 9:47pm
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Brad,
Get back to her as soon as you can to check those back cylinders again. It's hard to imagine that if you winterized properly, draining all the water from the HM manifolds, (or whatever kind for that matter) that both would crack, but if you have water back in the cylinders that could indeed be the cause as hinted above. (Where've you been, Mack?) If you have a manifold leak, it could indeed run fine all day, with only a small amount of water leaking down not presenting a noticable problem as it blew it out, but then after sitting for several days, water could continue to leak out at a slow pace and flow mostly towards and settle in the back cylinders on decline. I had my 69 Mustang ingest half of Lake Norman two years ago when another operator attempted to start it and said it sounded like it misfired and preceeded to fill all 8 cylinders, and we NEVER found the cause, or evidence of it anyway. It's been fine ever since. Don't know if anyone remembers the thread, but it was suggested that it somehow spun backwards for a second while attempting to start and sucked water back up?? Never made sense to me, but we checked everything and then took it to some pros who also found nothing after performing every vital stat test known to man. Anyway, check to see if the water crept back in and let's go from there. ------------- ReidP /diaries/details.asp?ID=231&yrstart=1971&yrend=1975 - 1973 Mustang |
Posted By: mackwrench
Date Posted: April-02-2007 at 10:25pm
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Could it as well be the manifod/risers gaskets?
Seems like that was discussed on the thread reid refered to above.... any rate, reid, it's good to be back, I had taken a subatical from Correct Craft's in whole since 2005, I lost my engine/tansmission to Hurricane Dennis (just before katrina) and the boat was not high on the list for a while. BUT I just bought a complete take out engine/trans and have healed from my losses! ------------- NO LONGER A MEMBER |
Posted By: Tim D
Date Posted: April-02-2007 at 10:27pm
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If the exhausts are leaking water, (which probably leak in after shut down, while running, exhaust helps to push it back) look on the heads under the manifold where it touches the head and see if you see any signs of water/rust trails coming out between the gasket and the head. ------------- Tim D |
Posted By: 68lemans
Date Posted: April-03-2007 at 9:17am
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I took out the plugs and turned it over last night, NO WATER I put the plugs back in and she fired right up.
I will look for signs of any water trails between the gasket and the head. Should I just keep running it and keeping a close eye on her or should I do some more investigating? The manifold/risers gaskets don't look good just looking at them from the outside not even taking them off. Could someone explain a little how that gasket would let water in? I guess I don't know how the exhaust manifolds work. Thanks for everyones help. B |
Posted By: 79nautique
Date Posted: April-03-2007 at 9:43am
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the gasket between the manifold and engine can't cause a problem, the gasket between the riser and manifold can depending on the type/style they are. Check the intake bolts and make sure they are all tight. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: 68lemans
Date Posted: April-03-2007 at 10:00am
This is the type that I have. (this is not my engine)
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Posted By: 8122pbrainard
Date Posted: April-03-2007 at 10:27am
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The H/M aluminum exhaust manifolds do have a tendency to corrode or burn through. Have a friend with a 70 Barracuda with the H/M 302 with water getting into the rear cylinders. After lots of testing and new gaskets he finally found holes in the risers. Both sides and in the same spot. There is a section in the riser that is very thin walled. They would leak back after shut down. Welding was a problem because there wasn't much aluminum left in the area. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: 68lemans
Date Posted: April-03-2007 at 10:52am
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So Peter Did he have to get new ones or did he solve the problem by welding? Do you know a little more spicific where the leak was at? That sounds like the problem that I have.
Thanks B |
Posted By: 79nautique
Date Posted: April-03-2007 at 11:01am
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Jbear needs some elbows like those for his manifolds, if you can't fix them and the risers are good maybe you can work something out with john. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: 8122pbrainard
Date Posted: April-03-2007 at 11:19am
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68, The 2nd attempt at welding worked. I think the welder ended up cutting out a small section and added new aluminum. I want to say that the spot is around the riser drain plug. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: 68lemans
Date Posted: April-03-2007 at 12:05pm
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Ok so I don't totaly know who it works is there two chambers inside the manifolds, one with exhaust and one with water and the one with water has rusted through to the exhaust?
Is this what it looks like kind of? 
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Posted By: 8122pbrainard
Date Posted: April-03-2007 at 1:21pm
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Yes, the large center is the exhaust and the outside passages are for the water cooling. Looks like you have a problem with blockage in the water jacket too. That will create a hot spot on the manifold and or riser. You should have them pressure tested to see where the breach(s) are between the two chambers. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: 68lemans
Date Posted: April-03-2007 at 1:51pm
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That pic is just one I grabbed off of someone's post, I have not had mine off yet. I guess I will have to do that sometime. Is there anything that I should know when I take them off should I go a head and get some new gaskets before I take them off, do you suggest any certain type or companies to buy parts from.
Where or how should I get them pressure tested? Thanks for everyones help! |
Posted By: 8122pbrainard
Date Posted: April-03-2007 at 5:29pm
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I thought the picture looked small and only 3 and not 4 bolts!!
Pressure testing is simply plugging up one end of the manifold and then putting compressed air in the other to see if it comes out where is's not suppost to. I know it sounds too simplistic but maybe someone else can give you some pointers. I've seen it done with plumbers test plugs, block off plates or almost anything that will plug a hole and still handle the air. Sorry I don't know of a service that does this. Since you may need some welding done, you may want to take them to a local welding shop and ask them. They may be set up to test pressure tanks for weld leaks. You won't need the gaskets untill you are ready to put them back on. The H/M manifolds are not available anymore but you see them used sometimes on ebay. They do get up there in price though! Other aftermarket units are available but get yours checked out first. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |