Sprinter-Forum    
 

Go Back   Sprinter-Forum > T1N Sprinters > T1N Talk

T1N Talk General Discussions related to T1N Sprinters.


 
Thread Tools Display Modes
Old 06-05-2017, 10:46 PM   #21
Flatheadfever
 
Join Date: May 2016
Location: Nova Scotia
Posts: 148
Thanks: 64
Thanked 30 Times in 24 Posts
Default Re: Pressurized radiator on cold engine

I have these problem. Pressured system even after sitting for a couple days. Coolant low by a cup every 500 miles.
__________________
Kind regards,
Lindsay
I say "I'm retired" my wife says " im just unemployed"
2006 118" low roof general cargo/camper van
EastCoast lifestyle
Flatheadfever is offline   Reply With Quote
Old 06-05-2017, 11:32 PM   #22
abittenbinder
Doktor A (864-623-9110)
 
Join Date: Feb 2007
Location: Clemson/Greenville SC
Posts: 2,173
Thanks: 0
Thanked 2,718 Times in 796 Posts
Default Re: Pressurized radiator on cold engine

Typically a head gasket issue.

While the cold residual radiator cap pressure and coolant loss are typical symptoms, misc. other circulation related issues may exist.

Among those are erratic heater operation and a unique one recently- an '05 owner comes to me with a defective EGR valve and reports he has replaced 4 in the last 2 months. The EGR seller on EBay kept faithfully sending him warranty replacements!

That is indicative of EGR valve damage from localized overheating due to lack of coolant circulation in the EGR cooling circuit. Yes, the EGR coolant circuit does more than intake charge exhaust flow cooling, it also keeps the valve alive and well.

Moral of the story- combustion gas leaks into the coolant circuit can disrupt coolant flow in far flung branches of the system.

Doktor A
abittenbinder is offline   Reply With Quote
The Following 4 Users Say Thank You to abittenbinder For This Useful Post:
Aqua Puttana (06-06-2017), Flatheadfever (06-05-2017), Midwestdrifter (06-06-2017), owner (06-06-2017)
Old 06-05-2017, 11:35 PM   #23
Flatheadfever
 
Join Date: May 2016
Location: Nova Scotia
Posts: 148
Thanks: 64
Thanked 30 Times in 24 Posts
Default Re: Pressurized radiator on cold engine

Quote:
Originally Posted by abittenbinder View Post
Typically a head gasket issue.

While the cold residual radiator cap pressure and coolant loss are typical symptoms, misc. other circulation related issues may exist.

Among those are erratic heater operation and a unique one recently- an '05 owner comes to me with a defective EGR valve and reports he has replaced 4 in the last 2 months. The EGR seller on EBay kept faithfully sending him warranty replacements!

That is indicative of EGR valve damage from localized overheating due to lack of coolant circulation in the EGR cooling circuit. Yes, the EGR coolant circuit does more than intake charge exhaust flow cooling, it also keeps the valve alive and well.

Moral of the story- combustion gas leaks into the coolant circuit can disrupt coolant flow in far flung branches of the system.

Doktor A
Can you change a head gasket in place or does the engine have to be pulled?
__________________
Kind regards,
Lindsay
I say "I'm retired" my wife says " im just unemployed"
2006 118" low roof general cargo/camper van
EastCoast lifestyle
Flatheadfever is offline   Reply With Quote
Old 06-06-2017, 02:05 AM   #24
owner
 
owner's Avatar
 
Join Date: Sep 2011
Location: VIC AU
Posts: 2,176
Thanks: 771
Thanked 1,060 Times in 748 Posts
Default Re: Pressurized radiator on cold engine

Yep I can confirm circulation related issues. I have this pressurisation issue on mine, and I can hear the pockets of air flowing through the heater circuit while driving. Fortunately I don't have EGR. I have put in a bottle of K-Seal (https://www.kseal.com/au/) to see if that will fix it, but I'm not confident, since the crack/hole is under reverse pressure so the coolant/K-seal isn't being forced out of the crack because of the pressure coming in from the cyl. I tried to help it as best I could by allowing the hot engine to sit shutdown in REST mode using the Espar to circulate hot coolant without the engine continually pressurising the system. Will report back on the outcome when I check for pressure next week.
owner is offline   Reply With Quote
The Following 2 Users Say Thank You to owner For This Useful Post:
Aqua Puttana (06-06-2017), Flatheadfever (06-06-2017)
Old 06-06-2017, 05:19 AM   #25
abittenbinder
Doktor A (864-623-9110)
 
Join Date: Feb 2007
Location: Clemson/Greenville SC
Posts: 2,173
Thanks: 0
Thanked 2,718 Times in 796 Posts
Default Re: Pressurized radiator on cold engine

Quote:
Originally Posted by Flatheadfever View Post
Can you change a head gasket in place or does the engine have to be pulled?
A head gasket can be replaced in place but Best Practices and best quality outcome (as well as possible additional damage surprises) really demand that the engine is out of vehicle.

It will save time and money in the end.

Doktor A
abittenbinder is offline   Reply With Quote
The Following 2 Users Say Thank You to abittenbinder For This Useful Post:
Aqua Puttana (06-06-2017), Flatheadfever (06-06-2017)
Old 06-06-2017, 05:21 AM   #26
Flatheadfever
 
Join Date: May 2016
Location: Nova Scotia
Posts: 148
Thanks: 64
Thanked 30 Times in 24 Posts
Default Re: Pressurized radiator on cold engine

Quote:
Originally Posted by abittenbinder View Post
A head gasket can be replaced in place but Best Practices and best quality outcome (as well as possible additional damage surprises) really demand that the engine is out of vehicle.

It will save time and money in the end.

Doktor A
Would that be pulling the engine and transmission out as one unit?
__________________
Kind regards,
Lindsay
I say "I'm retired" my wife says " im just unemployed"
2006 118" low roof general cargo/camper van
EastCoast lifestyle
Flatheadfever is offline   Reply With Quote
Old 06-06-2017, 05:31 AM   #27
abittenbinder
Doktor A (864-623-9110)
 
Join Date: Feb 2007
Location: Clemson/Greenville SC
Posts: 2,173
Thanks: 0
Thanked 2,718 Times in 796 Posts
Default Re: Pressurized radiator on cold engine

Quote:
Originally Posted by Flatheadfever View Post
Would that be pulling the engine and transmission out as one unit?
You can remove the transmission first (and mate to engine before re-install) OR remove them as a unit.

But do not risk damage to the transmission's oil pump, t. converter seal, etc. by removing just the engine.

Doktor A
abittenbinder is offline   Reply With Quote
Old 06-06-2017, 12:16 PM   #28
Flatheadfever
 
Join Date: May 2016
Location: Nova Scotia
Posts: 148
Thanks: 64
Thanked 30 Times in 24 Posts
Default Re: Pressurized radiator on cold engine

Quote:
Originally Posted by abittenbinder View Post
You can remove the transmission first (and mate to engine before re-install) OR remove them as a unit.

But do not risk damage to the transmission's oil pump, t. converter seal, etc. by removing just the engine.

Doktor A
I only have 180000 kms on the sprinter. After my 18k trip last summer the low coolant light came on. It has been getting worse in the last 8k kms.

I was planning a 2k trip next week. Still trying to figure out how I could use the van on this trip and fix it on return. I know it is not right but tempted to try to seal the leak so I can make the trip.

I can see how the compression pushes the pressure in, I'm surprised it doesn't bleed off back through the same place. If the sealant can't feed back through the same spot then it wouldn't work.
Still not sure where the antifreeze is going. Out the exhaust ( haven't noticed anything)or out the overflow tube ( nothing dripping or on the ground). I originally thought it was a small leak related to the espar or hoses.

I'll remove both as one unit.
I will be asking for help on what has to come off and what can stay on and be removed with the unit. I'll probably ask a semi retired mechanic friend to help.

What can I get for a manual and is it online so I could print it out?
If anyone know specific threads that would outline engine removal would be appreciated.

Thanks
__________________
Kind regards,
Lindsay
I say "I'm retired" my wife says " im just unemployed"
2006 118" low roof general cargo/camper van
EastCoast lifestyle
Flatheadfever is offline   Reply With Quote
Old 06-09-2017, 01:28 AM   #29
owner
 
owner's Avatar
 
Join Date: Sep 2011
Location: VIC AU
Posts: 2,176
Thanks: 771
Thanked 1,060 Times in 748 Posts
Default Re: Pressurized radiator on cold engine

Quote:
Originally Posted by Flatheadfever View Post
I can see how the compression pushes the pressure in, I'm surprised it doesn't bleed off back through the same place. If the sealant can't feed back through the same spot then it wouldn't work.
Still not sure where the antifreeze is going. Out the exhaust ( haven't noticed anything)or out the overflow tube ( nothing dripping or on the ground). I originally thought it was a small leak related to the espar or hoses.
Yeah thats why I ran my sealant through the system using the espar after it had been pressurised, to give the sealant a chance of being forced back out the hole. There is a lot of pressure when a cylinder fires, I would guess thats when the air escapes into the coolant, and helps explain why the coolant isn't going back into the cyl so much. All it needs is a tiny pinhole of a crack.

My theory about where the coolant is going, is that is it being gradually evaporated out with the escaping combustion air out the overflow breather. Mine also has no traces of coolant around the cap/breather.

I opened the cap on mine yesterday for the first time since putting the K-seal in this time last week. There was still a big burst of pressure released, which I was expecting. The real test now is if it still has pressure the next time I pull the cap. Will give it a few days and report back. I can still hear cavitations in the heater pipes, but it seems to have reduced a lot during the week. Fingers crossed.
owner is offline   Reply With Quote
The Following User Says Thank You to owner For This Useful Post:
Flatheadfever (06-09-2017)
Old 06-09-2017, 02:51 AM   #30
NORTON
 
Join Date: Jan 2011
Location: adelaide south australia
Posts: 522
Thanks: 87
Thanked 253 Times in 188 Posts
Default Re: Pressurized radiator on cold engine

I have the MB documents for engine removal and install for the 612.981 sprinter engines
If useful to you I can scan and email
NORTON is offline   Reply With Quote
The Following User Says Thank You to NORTON For This Useful Post:
Flatheadfever (06-09-2017)

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT. The time now is 06:10 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.