| Author |
 Topic  |
| |
Current Topic Rating:  | Join the Forum to Rate this Topic at: www.VNCommodore.com Support Forums
|
|
|
Jamie Bowe
Fully Licenced
156 Posts
 |
 Posted - 14 Jun 2011 : 11:27:14 PM
|
Hey everyone, my VN has been going through LOTS of water & I take it around the block for only 5 minutes and my overflow tank is boiling, steams for about 5-10 minutes. I spoke to VNGRPA (Shane) about this, and he thinks its my thermostat, I just wanted to check if anyone else has had this problem before me and shane go to change the thermostat.
Thankyou.
|
|
Report to Moderator |
|
|
VNSVLE
Forum Moderator
1316 Posts
|
Posted - 15 Jun 2011 : 2:31:08 PM
|
Boiling like that I would suspect an air lock or a cracked block/head. To check for a cracked block/head remove radiator cap and watch for bubbling also have a smell will be a distinct exhaust smell.
I dont think it will be thermostat though because if it was not opening you engine would get hot because the water cant get past the thermostat and into the radiator so your radiator would be relatively cool and not boiling into your header tank.
If it was stuck open the engine temp would be below normal and again not getting to the boiling point.
Another thing to check would be the radiator cap if the radiator cap is faulty it wont be allowing the cooling system to get to the correct pressure meaning it will lower the boiling point of the cooling system.
|
What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared. |
Report to Moderator  |
|
|
Jamie Bowe
Fully Licenced
156 Posts
|
Posted - 15 Jun 2011 : 5:25:56 PM
|
| I don't have a radiator cap, I have a series one, well atleast i don't think i do. And when i get back from literally a 2 minute drive my engine is pretty damn hot too.. |
| Report to Moderator |
|
|
Jamie Bowe
Fully Licenced
156 Posts
|
Posted - 15 Jun 2011 : 5:27:25 PM
|
| Oh and when i open the overflow tank it is boiling and doesn't smell like water, not to sure about the exhaust smell but, The water is completely brown and a little thick, even though i just changed it |
| Report to Moderator |
|
|
thedunga
P Plater
90 Posts
|
Posted - 15 Jun 2011 : 9:50:08 PM
|
| first check the oil to see if its milky second see a mechanic and ask them if they have the additive to add to the radiator to see if there is exhaust gasses leaking into the water( it changes the colour if there is exhaust gas coming in) or you can just try a bottle of GOSS CHEMIWELD and see if it fixes the leak, i have a similar problem with the dunga and its from one head gasket having a pin hole leak letting gas in during combustion. but i only lose 1/2 cup per week |
Save a dim sim fry tyres instead. |
| Report to Moderator |
|
|
Jamie Bowe
Fully Licenced
156 Posts
|
Posted - 15 Jun 2011 : 10:41:03 PM
|
what colour would the water be from exhaust fumes mate?
|
| Report to Moderator |
|
|
VNSVLE
Forum Moderator
1316 Posts
|
Posted - 16 Jun 2011 : 12:35:10 AM
|
| Yep thought so works the same way though. The series one "radiator cap" is the cap on the overflow. |
What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared. |
| Report to Moderator |
|
|
Jamie Bowe
Fully Licenced
156 Posts
|
Posted - 16 Jun 2011 : 09:31:29 AM
|
| Yea, any idea's anyone? It doesn't matter if i use water instead of coolant much does it? (I've just done it till the problem is fixed) |
| Report to Moderator |
|
|
VNGRPA
Fully Licenced
426 Posts
|
Posted - 16 Jun 2011 : 10:35:02 AM
|
i prob wouldn't be using water if you are going to drive it as it will end up blocking the water ports in your inlet manifold and heads causing more problems, when i had my ser1 motor the same thing happened to me the thermostat wasn't opening witch caused the engine to get hot but the water was still getting into the motor via the heater core pipes one goes into the back of the inlet and at the front of the engine by the water pump were the pipe comes out that goes to the over flow and when the motor got hot it would suck the water from the heater core through the inlet then out by the pump but by the time it got back to the overflow it had turned to steam, once i replaced the thermostat and cleaned the water ports on the inlet and heads it fixed the problem,
from what i have read sounds like we should
1-check the cap make shore the seal is still good
2-do a compression test
3-if the test is fine add the additive that thedunga is talking about(but the compression test should pick that up it should)
4-change the thermo and water pump as they both look pretty stuffed
if you think we should try something different pls let us know
|
| Report to Moderator |
|
|
VNSVLE
Forum Moderator
1316 Posts
|
Posted - 16 Jun 2011 : 12:47:57 PM
|
Running only water in the system lowers the boiling point which can cause some problems in itself. Plain water combined with a buggered overflow cap could be the cause of you problems.
As an example if cooling system was to reach pressure (which off the top of my head I believe is approx 15psi) the boiling temperature of the water is approx 119 oC with suitable coolant this figure goes upto approx 125 oC, 25 degrees higher than normal water on the hotplate would boil.
When filling the cooling system use demineralised water and coolant concentrate at a 50/50 ratio. Make sure you get a coolant that is compatible with aluminum systems. |
What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared. |
| Report to Moderator |
|
|
Jamie Bowe
Fully Licenced
156 Posts
|
Posted - 16 Jun 2011 : 8:14:43 PM
|
| my overflow cap is just a normal cap if thats causing it? but yea ill use coolant and demineralized water |
| Report to Moderator |
|
|
vn1990vxclubbykit
Learner
7 Posts
|
Posted - 16 Jun 2011 : 9:44:29 PM
|
| I have the com |
love my family and my cars |
| Report to Moderator |
|
|
vn1990vxclubbykit
Learner
7 Posts
|
Posted - 16 Jun 2011 : 9:55:17 PM
|
| I have the compleat opposite my car runs so cold I use twice the fuel I'm ment to and the problem is the thermostat is stuck open |
love my family and my cars |
| Report to Moderator |
|
|
Mechknight73
National Driver
1001 Posts
|
Posted - 17 Jun 2011 : 07:01:38 AM
|
| Another one to check, is make sure your radiator is fairly unblocked. This is the most basic cause of engines overheating, before all else before it |
| Report to Moderator |
|
|
Mechknight73
National Driver
1001 Posts
|
Posted - 17 Jun 2011 : 12:52:56 PM
|
| I forgot to mention, check to make sure there's no cracks in the radiator tanks, or leaks from the cores. A leak in the radiator core will show up as this ugly white scale on the aluminium fins |
| Report to Moderator |
|
|
VNSVLE
Forum Moderator
1316 Posts
|
Posted - 17 Jun 2011 : 10:41:48 PM
|
| Can you post up a pic of your overflow cap buddy?? |
What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared. |
| Report to Moderator |
|
|
Jamie Bowe
Fully Licenced
156 Posts
|
Posted - 17 Jun 2011 : 10:49:39 PM
|
 It's the same as that one (That's not my car but) |
| Report to Moderator |
|
|
Jamie Bowe
Fully Licenced
156 Posts
|
Posted - 17 Jun 2011 : 11:01:01 PM
|
 Thats mine, i can't find a better pic and its too dark tonight, if you need a better one i can get it when i wake up if you like |
| Report to Moderator |
|
|
VNSVLE
Forum Moderator
1316 Posts
|
Posted - 18 Jun 2011 : 7:54:20 PM
|
| It looks like a proper pressure cap buddy and that could be part of the problem if it is not allowing the system to pressurise. |
What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared. |
| Report to Moderator |
|
|
Jamie Bowe
Fully Licenced
156 Posts
|
Posted - 18 Jun 2011 : 10:09:11 PM
|
| Is it meant to be real tight? because thats what i normally do, or am i meant to use a cap that lets it build pressure? |
| Report to Moderator |
|
|
VNSVLE
Forum Moderator
1316 Posts
|
Posted - 19 Jun 2011 : 05:50:10 AM
|
If you have a look on the under side of the surge tank cap you will see the valving for the relief and there will also be a seal.
Make sure the seal is good and check the condition of the valves.
This may have nothing to do with your problem but it may also be a contributing factor.
Just something that is worth a check. |
What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared. |
| Report to Moderator |
|
|
thedunga
P Plater
90 Posts
|
Posted - 19 Jun 2011 : 10:24:03 PM
|
| make life easy and convert to a s2 intake its fairly easy to do i have done it in the dunga you need a couple of bits but it is worth it to have the thermostat up front and a cap on the radiator. |
Save a dim sim fry tyres instead. |
| Report to Moderator |
|
|
VNGRPA
Fully Licenced
426 Posts
|
Posted - 19 Jun 2011 : 11:28:39 PM
|
| hahaha that would mean i would have to do all the work while Jamie watched but not a bad idea |
| Report to Moderator |
|
|
Jamie Bowe
Fully Licenced
156 Posts
|
|
|
VNGRPA
Fully Licenced
426 Posts
|
Posted - 20 Jun 2011 : 09:46:49 AM
|
| that i could help you with as i have a spare ser2 manifold with the elbow and tb still on it only thing you would need would be a radiator and overflow bottle i think haha i think we might be going off topic a bit, however if jamie's head gaskets are blown i will be convincing him to put one one if we have the heads off hahaha |
| Report to Moderator |
|
|
VNSVLE
Forum Moderator
1316 Posts
|
Posted - 20 Jun 2011 : 2:21:47 PM
|
| I think there is some minor porting differences between the series 1 and series 2 manifolds. |
What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared. |
| Report to Moderator |
|
|
Jamie Bowe
Fully Licenced
156 Posts
|
Posted - 20 Jun 2011 : 4:29:03 PM
|
Alright guys I have some photo's to show you's, i just took it for a spin around the block and it was pretty damn hot (the water that is & i think the motor was), but i sat it in idle for 10 mins before hand and it just got to room temp. In the pictures it looks real dirty, but the water is clean, just haven't cleaned the overflow tank and the cap yet.
 |
| Report to Moderator |
|
|
HELGRL
P Plater
38 Posts
 |
Posted - 09 Jul 2011 : 8:16:31 PM
|
| hey, did u manage tofind the problem? i had the same problem with my old vn... it was the water pump pulley, it started ceasing... |
HELGRL |
| Report to Moderator |
|
|
Jamie Bowe
Fully Licenced
156 Posts
|
Posted - 10 Jul 2011 : 12:03:16 AM
|
| Narh not sure yet, going for its road worthy tuesday and ill tell them about it and let them sort it out.. ill post up what the problem was. me & shane (VNGRPA) think its the thermostat |
| Report to Moderator |
|
|
VNGRPA
Fully Licenced
426 Posts
|
Posted - 10 Jul 2011 : 12:26:10 AM
|
| haha yer the thermostat is pretty old and corroded up |
| Report to Moderator |
|
|
Jamie Bowe
Fully Licenced
156 Posts
|
Posted - 09 Aug 2011 : 7:16:42 PM
|
| Booked it in for monday at the mechanics, i'm hoping its nothing to big thats broken, but me and Shane are quite positive its the thermostat. |
| Report to Moderator |
|
|
Topic |
|
VN Going through lots of water?
