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08-10-2020, 08:07 PM
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#1 |
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Senior Member
 
Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,862
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Coolant leak?????
So I pulled off my starter to get to the plug behind it on my 03 LS motor and coolant started dripping????
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1967custom |
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08-10-2020, 09:37 PM
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#2 |
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Post Whore
 
Join Date: May 2015
Location: Alabama
Posts: 14,670
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Re: Coolant leak?????
Can you tell where it's coming from?...maybe freeze plug on head if it's up high
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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08-10-2020, 11:53 PM
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#3 |
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Senior Member
Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,862
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Re: Coolant leak?????
No the tranny is mated to it. It's wet inside the bell housing right at the bottom inside of the starter hole but not pooled.
Everything is dry behind the motor that I can see
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1967custom |
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08-11-2020, 11:45 AM
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#4 |
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Registered User
Join Date: Apr 2004
Location: Boiling Springs, PA
Posts: 435
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Re: Coolant leak?????
could be the steam holes that are on end of heads...the rears are typically plugged with a bolt in piece, some use an o-ring and some a gasket, they will seep a bit and drop down in that area
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71 C10 long bed, 2003 6.0L, 06GTO E40, T56, 12bolt 4.10 rear |
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08-11-2020, 04:45 PM
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#5 |
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Registered User
Join Date: Jun 2015
Location: Carlos MN
Posts: 2,132
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Re: Coolant leak?????
I just looked at my 2012 6.2 LS I have on my engine stand and I can't see any place water can drip from the back of the block or head. I don't think the rear seal cover opens to any water openings but I could be wrong. I haven't had one off in ages.
On my L92 heads the rear steam holes are plugged with what looks like aluminum melted into the steam holes. No bolts. I would add some stop leak and see what happens. Hope it's not a head gasket. |
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08-12-2020, 02:11 PM
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#6 |
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Senior Member
Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,862
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Re: Coolant leak?????
Sh/© I hope it's not a head gasket.. imma take a flashlight to the back of the engine now... Ugh.....
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1967custom |
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08-12-2020, 04:40 PM
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#7 |
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Registered User
Join Date: Jun 2015
Location: Carlos MN
Posts: 2,132
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Re: Coolant leak?????
I just looked again and there is what looks like plug on the back of both heads that's about 3/4" in diameter. It sticks out maybe 1/16" from the head. Not like a typical soft plug but something that was done at the foundry as maybe casting vent? It has some type of sealant around the plug. And there is a similar plug on the back of the engine block on the upper right side but inside the bell housing.
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08-19-2020, 12:22 PM
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#8 |
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Registered User
Join Date: Apr 2004
Location: Boiling Springs, PA
Posts: 435
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Re: Coolant leak?????
there's no water plugs inside the bellhousing area on an LS.
some of the L92 heads yes have the steam holes permanently plugged on the rear...but an 03 LS engine would have them blocked with bolt on plugs. if that plug on the rear of passenger side head is weeping, it will drip right down on the starter area
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71 C10 long bed, 2003 6.0L, 06GTO E40, T56, 12bolt 4.10 rear |
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08-19-2020, 02:48 PM
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#9 |
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Registered User
Join Date: Apr 2012
Location: Chatt Tn
Posts: 982
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Re: Coolant leak?????
both of my cylinder heads have a freeze plug right in the back of the head, 1" or 1 1/4".
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88 military v30 crewcab shortbed 5.9 cummins, nv4500, 205 86 k30, 89 diesel burb, 76 gmc pathfinder 71 longbed 5.3 4l80 http://67-72chevytrucks.com/vboard/s...d.php?t=522535 |
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