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Malawixtrail Profile
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Date Registered: 08-2015
TOTAL POSTS: 60
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Engine gasket


Yesterday i visites the official Nissan dealer. They found a p0115 error.

They replacement the engine coolant sensor. Because the car is around 130.000 KMS. They also replacement the crank shaft position sensor, the cam shaft position sensor and the fuel filter.

With the mechanic i made a test drive afterwards. When driving uphill the engine seemed to get a little hot. When we came back to the garage he looked in the engine compartiment and felt the tube from radiator to the engine. He Said that there was too much pressure inside. He tought that it was from the engine gasket?

Now i have 2 questions:

1. What does he mean by too much pressure in that tube and with the gasket

2. What is the function of the gasket? And can it cause overheating and is it normal that it should be replaced?

---
Xtrail 2001 T30 2.0 petrol automatic

Zomba, Malawi
25/Nov/2015, 4:32 pm Link to this post Send Email PM   Send Private Message Blog
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6355
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Re: Engine gasket


The head gasket (engine gasket as he called it) seals the pistons from the cooling system holes in the engine shell.
If you have a blown head gasket (a hole in it somewhere) it would let pressure from the pistons into the cooling system, pressurising it and also causing it to lose coolant and overheat.

---
Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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25/Nov/2015, 10:57 pm Link to this post Send Email PM   Send Private Message Blog
 
Malawixtrail Profile
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Date Registered: 08-2015
TOTAL POSTS: 60
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Re: Engine gasket


In my car I have problems with starting a hot engine.

Also the coolant temperature gauge is never in the middle but always just below the black line close to the H. (if the middle is 3 pm than my gauge is always around 2 pm or even close to 1 pm)

Can this problem also make that the tube running from the radiator to the engine is under a lot of tension?




---
Xtrail 2001 T30 2.0 petrol automatic

Zomba, Malawi
26/Nov/2015, 12:27 am Link to this post Send Email PM   Send Private Message Blog
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6355
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Re: Engine gasket


It will run that hot either due to a blown head gasket or your radiator cooling fans not working.
Check the fans and if they are working then get the head gasket seen to.

---
Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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26/Nov/2015, 8:50 am Link to this post Send Email PM   Send Private Message Blog
 
Malawixtrail Profile
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Date Registered: 08-2015
TOTAL POSTS: 60
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Re:


Both fans are turning around. The radiator is filled up and it seems im not loosing a lot of Coolant liquid.

Does a high tension/pressure in the top Large hose from the radiator points to a gasket problem?

When I open the oil filling plug there is no white stuff to see.

What happenes when the engine blows? And how soon can that happen? Is it when it overheating to the max?

My car is still difficult starting with a hot engine.

Below i have inserted a pic of my temperature meter. Is this indicating overheating?

It gets at this point either
- after driving 70 km/h for like 10 km
- driving in town slowly after a few minutes

Image

Last edited by Malawixtrail, 27/Nov/2015, 1:45 am


---
Xtrail 2001 T30 2.0 petrol automatic

Zomba, Malawi
26/Nov/2015, 2:47 pm Link to this post Send Email PM   Send Private Message Blog
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6355
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Re: Engine gasket


If both fans are working then check your radiator fins to make sure they are not blocked and that air can pass through it. Driving at 70kph with a normal healthy engine would give plenty of cooling to not raise the temp so high.

Difficulty starting when hot could be from the blown head gasket like the high temp you are getting. If there is a small hole then when the engine warms up you would lose compression in one or more cylinders which would make starting difficult but when cold the hole would be smaller and not so much compression would be lost resulting in easier starting.

A faulty thermostat could cause the high temp but starting would not be affected in that case.
Normal operating temp for our engines would have the needle pointing to the D in a similar way as the fuel gauge in your pic.

---
Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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27/Nov/2015, 6:49 am Link to this post Send Email PM   Send Private Message Blog
 
Malawixtrail Profile
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Date Registered: 08-2015
TOTAL POSTS: 60
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Re: Engine gasket


How do I check the radiator Fins? And would cleaning if the radiator (flushing) be useful?

Or is it really the gasket you think?

What would your advice be to do?

I have to drive this car for at least another Half a year

By the way. The temparture meter is like that high for a long time. But the difficult starting is Just since one week. What can be the cause of changing?

Last edited by Malawixtrail, 27/Nov/2015, 2:54 pm


---
Xtrail 2001 T30 2.0 petrol automatic

Zomba, Malawi
27/Nov/2015, 2:52 pm Link to this post Send Email PM   Send Private Message Blog
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6355
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Re: Engine gasket


You check the radiator fins by looking through them from the front of the Xtrail grille to make sure you can see air gaps. If there is are no air gaps because most of them are blocked with mud or bugs then air cannot pass through to cool it.

If your temperature has been that high for quite some time before the difficult starting then I suspect it is the gasket.

---
Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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27/Nov/2015, 7:00 pm Link to this post Send Email PM   Send Private Message Blog
 
Malawixtrail Profile
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Date Registered: 08-2015
TOTAL POSTS: 60
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Re:


The cooling liquid expansion tank is now half full compared to yesterday. The radiator self is completely full.

Th Fins look like this

Image

Last edited by Malawixtrail, 27/Nov/2015, 10:45 pm


---
Xtrail 2001 T30 2.0 petrol automatic

Zomba, Malawi
27/Nov/2015, 10:33 pm Link to this post Send Email PM   Send Private Message Blog
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6355
Reply | QUOTE
Re: Engine gasket


The fins look good.

If your expansion tank started full and is not half full then your engine is losing coolant. Top it up and see if it continues to lose coolant each day.

You will not see the coolant loss until the next morning.
The engine heats up and as it des it usually expels some liquid into the expansion tank. Then when it cools down at night, the radiator draws some liquid back in from the expansion tank.
If there are no leaks then the level in the expansion tank willl be the same each morning since what goes in is drawn back out.
If there is a leak then coolant will be lost and that amount will be replaced by some coolant from the expansion tank and the level will continue to decrease each time.

---
Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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28/Nov/2015, 6:28 pm Link to this post Send Email PM   Send Private Message Blog
 


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