Internal coolant leak - Diesel Bombers

Chevy/GMC Duramax 07.5 -10 LMM Discussion of Chevy and GMC Trucks with LMM Duramax Turbo Diesel Engines

Internal coolant leak

Reply

 
 
 
  #1  
Old 01-04-2015, 09:19 PM
Newbie
Thread Starter
Join Date: Jan 2015
Posts: 4
Thanks: 0
Thanked 2 Times in 2 Posts
Default Internal coolant leak

Hi guys,

I got a internal coolant leak on my duramax lmm 09. I just changed all 8 injectors due to water in fuel, and right after that, I have experienced hydro lock (truck was not Cranking at all) and there was a loud knocking sound at low RPM's. I have a big white smoke cloud when I cold
Start it and white smoke disappear after engine is getting warm. I have noticed a coolant leak (lost about 3 inches for 1600 miles trip). Oil level looks fine. Now my question is: is there anyway to break something in the coolant patherns during the injectors replacement? I had no problems before I brang the truck to the shop. I have red that possible causes are head gasket, engine block or cylinder crack or egr system. I have done the deletes and I have a efi live tuner. Truck runs good, does not everheat has a good fuel economy.

Can you help me?


GMC SIERRA 3500 2009 SLE DURAMAX SINGLE 4x4 DPF-EGR deleted 230000 miles
 
Reply With Quote
The Following User Says Thank You to Mike0885 For This Useful Post:
geatgavi (03-06-2015)
  #2  
Old 01-04-2015, 11:54 PM
97cummins's Avatar
Super Moderator

Join Date: Jun 2008
Location: puyallup,washington
Posts: 5,812
Thanked 332 Times in 316 Posts
Default

leaking cylinder head gasket, cracked cylinder bore or cylinder.
Possable to break something during the injector replacement, yes it is possable.
 
Reply With Quote
The Following User Says Thank You to 97cummins For This Useful Post:
geatgavi (03-06-2015)
  #3  
Old 01-08-2015, 12:20 PM
FormerVendor
Join Date: Jul 2014
Posts: 136
Thanks: 0
Thanked 21 Times in 20 Posts
Default

I know you had stated that the oil level is fine, IF we can double check it may be possible the water pump is allowing coolant to get into the oil. Just a thought.
 
Reply With Quote
The Following 2 Users Say Thank You to Motorops For This Useful Post:
97cummins (03-08-2015), geatgavi (03-06-2015)
  #4  
Old 02-27-2015, 05:00 AM
Diesel Fan
Join Date: Sep 2011
Posts: 10
Thanks: 0
Thanked 2 Times in 2 Posts
Default

usually bad head gasket makes a lot of white smoke. it also solves my internal coolant leak. overheating engine really deteriorate a lot of parts in the engine. good thing my cylinders and water pump are still working but i guess it will be the next part to wear out. damn.
 
Reply With Quote
The Following User Says Thank You to greywarden For This Useful Post:
geatgavi (03-06-2015)
  #5  
Old 02-28-2015, 04:16 PM
Diesel Bomber
Join Date: Dec 2010
Location: Fool's Golden State
Posts: 1,188
Thanks: 0
Thanked 110 Times in 106 Posts
Default

My first guess would be the head gasket. The later years have better gaskets but on the earlier years it was uncommon for it to leak anywhere else
 
Reply With Quote
The Following User Says Thank You to 2004LB7 For This Useful Post:
geatgavi (03-06-2015)
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
duramax on fire
Chevy/GMC Duramax 01-04 LB7
11
08-14-2017 10:51 PM
IHdude
Chevy/GMC Duramax 01-04 LB7
1
07-13-2015 12:14 AM
throttleup22
Diesel In Distress - Support Ticket
0
05-02-2015 03:04 PM
merdth6
Ford Powerstroke 03-07 6.0L
3
11-20-2014 09:01 PM
dieseldummy
6.2L & 6.5L Performance
0
10-01-2014 08:51 AM


Thread Tools
Search this Thread
Quick Reply: Internal coolant leak


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.