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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Oil Leak on Head Nut Below Intake /cgi-bin/YaBB.pl?num=1461042895 Message started by calabria1922 on 04/18/16 at 22:14:54 |
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Title: Oil Leak on Head Nut Below Intake Post by calabria1922 on 04/18/16 at 22:14:54 Hi, I just purchased a 2013 S40 with 225 miles for my wife. After Driving it from SE Portland to just north of Seattle, I noticed an oil mist on the cooling fin below this head nut on the intake side. There is a similar head nut on the exhaust side. You can locate this nut on the drawing in the shop manual attached. It is noted as "15" on the drawing. After closer inspection I could feel a very small amount of oil above this head nut. Ignore the arrow, it's not pointing to the nut I am talking about. Has anyone else experienced a leak at this location? If so, how did you fix it? I am assuming it needs to be fixed even though the leak is on the order of one drop of oil every 300 miles, correct? It is in the shop now having it's 600 mile check which I decided to have them do as it includes re-torqueing the head bolts. Thank you everyone in advance any help you can provide!!! Scott. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by gizzo on 04/18/16 at 23:00:08 Maybe give it a good degrease and pressure clean and see where the oil is really coming from. There's no oil supply near that nut. But the head nut at 23 has an oil gallery surrounding it and it's sealed with a copper washer (25). It seems like a few leak here. Mine did. A smear of RTV fixed it. The oil could be from there and migrating around to the back of the cylinder. That's all I got. welcome to the forum. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by Dave on 04/19/16 at 05:04:31 The pressurized oil that comes up the right rear head stud tends to weep a bit of oil around the 3 plies of the head gasket, and some of it can ooze out the front and rear studs under the intake and exhaust ports.....it is a fairly common issue. Remove the nut, clean the cylinder, nut and stud to get the oil off, and then put a bit of RTV sealant on the threads and the bottom of the flanged nut.....the reinstall the nut. Tighten it pretty snug.....a pretty hefty tug on the wrench with one hand - but not Gorilla tight. And....since you are doing one - you might want to get the other one at the back of the engine under the intake port. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by ghryx on 05/05/16 at 18:54:21 So my 2001 was doing the oil-smoke and there was a lot of oil on the left-side engine. I did the oil-cap repair (a long tale that I will recount in another thread). Now that everything is back together I've had it up and running a couple times to test my results, I noticed it still smoked after 15-20 minutes of run-time. Here is some video of the nut actually leaking, but also smoke coming out from under the right side. Not sure if they're related, but thought I'd ask if anyone has encountered such a thing. https://vimeo.com/165519746 |
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Title: Re: Oil Leak on Head Nut Below Intake Post by Struch on 05/06/16 at 00:21:38 You need to do RTV like Dave said! I did it and problem went away! smoke looks like it is because the head is hot but I may be wrong |
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Title: Re: Oil Leak on Head Nut Below Intake Post by Dave on 05/06/16 at 05:57:41 Yep....and I need to do mine as well! I noticed that the exhaust side nut on my bike is getting oily. The interesting part of the video.....it looks like the oil is moving around....what is causing that? I am not sure the oi on the bottom of your clutch cover would be traced to to the nut under the exhaust....that is a long way for that oil to travel, and when in motion the oil would most likely just get blown around to the back side of the cylinder. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by ghryx on 05/06/16 at 07:15:35 The oil dancing around is (in my guess) because it's really hot at at this point. I think there's also some capillary action going on with the threads, maybe in combination with engine vibration? Maybe? Hell, i don't know. :P I'm in agreement that it's unlikely the two things are related. Really confused about that smoke. Will investigate further over the weekend. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by ghryx on 05/07/16 at 17:09:24 A good cleaning and sealant fixed the nut-leak problem quite nicely. The smoking on the side appears to have gone away too, which makes no sense to me, but I'll take it. :o |
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Title: Re: Oil Leak on Head Nut Below Intake Post by Jody72 on 03/07/18 at 23:25:07 i have I leak on my 2004 savage. on the right side I have not done a lot of looking but the oil is getting most everything oily on the right side even my boot. :-[ any ideas? is it just one of these nuts loose? |
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Title: Re: Oil Leak on Head Nut Below Intake Post by verslagen1 on 03/08/18 at 07:22:10 45404B56181D2F0 wrote:
Look next to the exhaust header and you'll see an opening in the head. If it's oily there, it's the head plug. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by Jody72 on 03/18/18 at 23:04:39 :'( :'( :'( my plug needs changed :'( :'( :'( verslagen1 you still selling plugs? |
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Title: Re: Oil Leak on Head Nut Below Intake Post by verslagen1 on 03/19/18 at 07:13:04 595C574A0401330 wrote:
Yes, click on the link or send me an email. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by justin_o_guy2 on 03/19/18 at 08:27:37 Everyone who Didn't torque the head didn't have a problem. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by batman on 03/19/18 at 10:20:45 736C6A6D70774676467E6C602B190 wrote:
JOG ,That's an interesting statement! Are they forgetting these are also head bolts? It would explain the leaks ,as they would not be tight if the four on top were torqued and these two were not. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by justin_o_guy2 on 03/19/18 at 10:36:49 The maintenance manual doesn't say to use sealer on the plug. And they don't. And they CAN reuse the original if it's not damaged. And charge for the new one. And who would ever know unless you demand they keep the old parts. Plug leaks after the job isn't uncommon. Sure, some leak, even If they have never been touched, but a correlation between The head bolts have been retorqued And My plug is leaking Seems pretty solid to me. That's just my opinion, But I never touched mine. Put twenty thousand miles on it. Never a leak. Never a head gasket problem And Nobody I know of Who decided that retorquing head bolts was silly Has regretted it. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by batman on 03/19/18 at 10:49:22 736C6A6D70774676467E6C602B190 wrote:
JOG ,That's an interesting statement! Are they forgetting these are also head bolts? It would explain the leaks ,as they would not be tight if the four on top were torqued and these two were not. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by justin_o_guy2 on 03/19/18 at 11:01:49 Having seen a coupla oil filters installed bass ackwards and engines destroyed by Perfeshunal Mechanics, I can't say anything about your question except That's a good Question. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by Jody72 on 03/19/18 at 16:38:58 well I can tell you that is false. I have never tightened my head bolts 15,000 miles and I have oil leaking all over. 2004 savage |
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Title: Re: Oil Leak on Head Nut Below Intake Post by justin_o_guy2 on 03/19/18 at 19:31:17 Have you had the head cover off? |
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Title: Re: Oil Leak on Head Nut Below Intake Post by Jody72 on 03/19/18 at 21:42:35 nope I have not. I have only changed oil, oil filter, air filter and played with the carb. but mid season last year it started leaking. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by justin_o_guy2 on 03/20/18 at 00:22:14 Have you cleaned it up and hunted the reason? I DID say the plug Can leak. And stuff does get loose. NOT having the retorqued is no guarantee it's not gonna leak. You might reread my post. Ask yourself What is retorquing the Head meant to accomplish? Would that be Head gasket? And how many head gasket losses have we seen? I THINK I remember reading about One. Paying for, or doing it yourself, seems silly. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by kojones on 03/20/18 at 02:59:19 I've had a -head gasket failure -oil leak on the nut below exhaust Didn't retorque the head bolts after rebuild, this time I will :D |
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Title: Re: Oil Leak on Head Nut Below Intake Post by justin_o_guy2 on 03/20/18 at 09:38:41 Did your head gasket blow on the unmolested stock motor? It's not a very common thing. I've been here thirteen years and I think I've seen one. People Do have a leak and diagnose a blown gasket, and Fix it... before they ask here. If you installed the gasket And it failed There are many variables to consider . If retorquing the head is actually Necessary due to design Then it would be a mistake Not to. And we have a buncha people who have never touched the head bolts. So The obvious answer is It's not something that must be done. If the bolts stretched out in six hundred miles, or the case gasket crushed, whatever, then Not retorquing would come with penalties. Mine and many others suffered no penalty. Leaks that people have seen after the shop "Fixed it " Have been a problem. Looks like a solution in search of a problem. And it's expensive to have done. And expensive to resolve the plug leak. In time or cash. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by batman on 03/20/18 at 11:40:53 kojones, How did you detect the head leak? why did you need to rebuild? Did you resurface the head and/ or cylinder , during the rebuild ? more details would be interesting. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by kojones on 03/20/18 at 13:20:55 585B4E575B540E023A0 wrote:
I bought the bike with the engine making weird noise, spent a year and a half repairing and replacing everything on the top end, including a Wiseco piston, new valves and head work. Finally after splitting the case I found a missing alignment pin at the gear driving the countershaft. That solved the noise issue and was the first rebuild, had the top end apart 3 times ::) Rode ca. 3000 miles with it last summer, then noticed it's leaking oil below the exhaust and consuming much more oil than that leak suggests, took it apart and found a blown head gasket. Think I might have heard some pinging so replaced the stock value spark plug with a colder plug. We'll see how it goes this time :D |
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Title: Re: Oil Leak on Head Nut Below Intake Post by justin_o_guy2 on 03/20/18 at 13:51:20 Not exactly a sound repudiation of what I was saying. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by kojones on 03/20/18 at 14:06:59 2D3234332E2918281820323E75470 wrote:
Nope. And the leak below the exhaust was cured with some sealant on the threads and the nut, after that the oil went out through the exhaust. Oil consumption was really bad, something like 1 liter / 100 km. And if I'd had eyes on my back I would have probably seen a huge cloud of smoke following me ;D |
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Title: Re: Oil Leak on Head Nut Below Intake Post by batman on 03/20/18 at 20:39:19 A cooler plug may not be as good as running higher octane gas , if the bike is pinging. Pinging may have contributed to the head gasket and counter shaft damage. Pinging (detonation ) is caused by the flame front moving to fast ,and igniting the fuel which expands before the piston passes TDC , 1) the piston is forced backward (damage to your trans?) 2) as the piston is moving up and the fuel is already expanding the combustion pressure rises much higher than normal ,attacking the weakest link (your head gasket). Octane is a fuels resistance to ignite , which is what a higher compression motor needs to prevent pinging. A cooler plug is shorter and will remove heat from the head area faster after combustion , but will not slow the speed at which the flame front moves, so will do little /nothing to prevent detonation. If finding high octane fuel is a problem ,you could double the thickness of the base gasket on your cylinder reducing your compression by about 1 point 10.5 to 9.5 ,this may sound bad ,but when you raise your compression from 8.5 to 9.5 you gain 5% more hp ,but if you raise it again from 9.5 to 10.5 you only gain 2.5% more hp . |
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Title: Re: Oil Leak on Head Nut Below Intake Post by justin_o_guy2 on 03/20/18 at 20:50:32 It's a torquey motor, but you can kill it lugging it. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by kojones on 03/21/18 at 00:38:34 37342138343B616D550 wrote:
Sounds good. If it blows another head gasket I'll put another base gasket in there. The next step up in fuel octane is ethanol, I'm going to try that anyway but not going to use it regurarly. 98 E5 should be fine for high comp, and that's what I was using. |
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Title: Re: Oil Leak on Head Nut Below Intake Post by batman on 03/21/18 at 09:14:38 kojones, ethanol will give you higher octane, we have different ratings for gas than you do I'm sure, but I have run 87 octane( E 10 ) in my stock motor for 22years , with no problems , and ethanol does raise the octane level of your fuel,If that's what it takes to prevent pinging I'd use it! |
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