radiator/e30m40

[rezzy3181]

My car never had any overheating problem ever since I had it past close to 7years, I realise that every 2 to 4 days I have to fill the expansion bottle say a cup of water well actually I rendomly check always so prorata lah about that. I am very sure no leaks anywhere as my car I had done most changes to new parts except body and the radiator lah well at one time a little leak at the side but was gone by itself nearly get a brand new radiator but that leak is gone, the temperature never touch 1/2 at any time. I just wonder any sifus had this problem or not or normal and happen a friend from Segamat call me this morning asking if I have this problem same as mine, I told him normal as I had this all the while so I am not worried but did tell him I'll check out, he is our new member too.Can any sifu advice on this. :wink:

 

[rezzy3181]

mtek1813 lu tak tidur ke? esok ponteng?? :lazy:

 

[fabianyee]

Are the hose clips tightened properly??? water pump leaking?

I never have to top up that frequently. sometimes went on for months.. hehehhe

 

[MeanStreak]

Originally posted by rezzy3181@Jun 15 2005, 01:49 AM
mtek1813 lu tak tidur ke? esok ponteng?? :lazy:

sekejap lagi nak tido le ni.... tengah top up my expansion bottle ni..

 

[rezzy3181]

pretty sure all are tight and will check again, water pump change new had a leak about 2 years back. thanks Febianyee

 

[elwine30]

u may need to bleed the system.

 

[skinhead]

if u need to topup water to ur cooling system, there must be leak somewer. im not worried if u need to topup a cup a day. human oso need to drink at least 3 bottle of water everyday

if u use coolant (bmw that is), u can notice wer the slow leak would be. got trace 1. or mebbe ur expansion tank cap is bad as it happen to my junk wer it slowly releasing the vapor out after a drive. i need to topup bout 1/2-1L every week, once i changed the cap, so far no need topup.

 

[ersalle]

Ok here's what happen to my M40 engine, previously i also keep topping up coolant/water every week.
The culprits are as follows:
Check for small leaks at the black plastic pipe going into the engine block. This black plastic pipe is just behind the oil filter housing and has an O-ring inside. When the engine is cold and after a starting there will be coolant seep, keep a look out at this particular place. Sometimes after parking overnite u can see coolant puddles below there. The leak will stop once the engine is warm, remedy to this either u change the O ring or be like me remove the pipe, cleaned it and paste high temperature silicon banyak2 and fit it back hehehehe. Another place also during engine start from cold is between the expansion tank and radiator gap, coolant would also seep out between the gaps as the radiator pressurises. Remedy pour one bottle of coolant stop leak (wynn's or others) into the top radiator hose inlet, but still got some seepage because i was using castrol coolant.

So far now no coolant loss after fixing those 2 and last week i flushed the radiator and pour in ori BMW coolants. I also notice that using original BMW coolants(blue color) the seeping at cold start was totally gone at the radiator/expansion tank gaps.

PS: Provided u'r head gasket no leak/water pump is not about to give way/hose not loose or cracks /radiator in good condition heheheheh

GOOD LUCK

 

[tyke]

did u check ur hose linking frm the coolant reservoir to the radiator?
sometimes it will crack at either end
also check the one from the engine area...its near the powersteering reservoir i think

 

[elwine30]

found my leak. it's at the stoper of one of the hoses. Sigh, the stopper was bocor ALL over.

Replace with rubber pipe and end it with stopper.

Now, i have a BIGGER problem. Sigh. what a month

 

[elwine30]

new findings today. Bleed my cooling system (via the engine) during the evening. Then my water was running fine. When shopping and etc. After that, on the way back. Decided to do some heroic move, push the car a little harder.

After that, my temp goes up again. Same problem. Sigh.

Went back home, cool down the car. Found out that the expansion tank bengkak and leak coming out at the bottom of the car.

Now, the funny sympton is when I push the car, the water cooling system seems to be STUCK somewhere. And i suspect it didn't go through a full cycle because it didn't reach to my temp cut off switch (which will activate my fan). After I stop my car, the preasure builds up towards my expansion tank.

Now, my conclusion is either

1) i need to bleed my radiator water (not only the engine)
2) replace my termostat.

Ok, if i do the item 1 above. Let's see my problem comes back again or not.

If yes, what else could it be ? my water pump or termostat ?????

If water leaks into my head gasket, i do believe I will see milky oil when i pull up my dip stick. And also, oilly water in my expansion tank.

Any ideas from sifus here...

 

[Axle]

Tukar je baru...dah terpaksa... :cry:
Hari tu i changed my radiator rm700 with installation... :yahoo:

 

[rezzy3181]

Originally posted by Axle@Jun 19 2005, 12:03 AM
Tukar je baru...dah terpaksa... :cry:
Hari tu i changed my radiator rm700 with installation... :yahoo:

I will change if I see any serious leaks but so far so good trying to find where the water goes.
well to all friends that gives all good ideas to check out I'll do and see where it goes and thank you for all the advices.

 

[rezzy3181]

Originally posted by elwine30@Jun 15 2005, 09:00 AM
u may need to bleed the system.

Bleeding was done last 5yrs ago and I think will try this out but my expansion cap is new, the bleeding small screw new in fact for me I prefer changing new what I feel need to change only body belum tukar most parts had change new, feel confident driving all day long when you know most important parts change.

 

[elwine30]

my radiator is fairly new and my hoses (on the left side is all new).

So, the other components needs changing would be my termostate, water pump and my return hose.

I also need to change my expansion tank, expansion seals and etc...

So, let's see how it goes.

 

[rezzy3181]

Originally posted by elwine30@Jun 19 2005, 10:14 PM
my radiator is fairly new and my hoses (on the left side is all new).

So, the other components needs changing would be my termostate, water pump and my return hose.

I also need to change my expansion tank, expansion seals and etc...

So, let's see how it goes.

is the expansion tank come together with the radiator of by it self? looks like all in one. I will see to it just to make sure.

 

[elwine30]

yes, it comes together with the radioator. But you can order to replace your deals (one above and one below) for the expansion tank. Notice the two screws on top on the radiator cover.

 

[bmwky]

Originally posted by elwine30@Jun 18 2005, 11:07 PM
new findings today. Bleed my cooling system (via the engine) during the evening. Then my water was running fine. When shopping and etc. After that, on the way back. Decided to do some heroic move, push the car a little harder.

After that, my temp goes up again. Same problem. Sigh.

Went back home, cool down the car. Found out that the expansion tank bengkak and leak coming out at the bottom of the car.

Now, the funny sympton is when I push the car, the water cooling system seems to be STUCK somewhere. And i suspect it didn't go through a full cycle because it didn't reach to my temp cut off switch (which will activate my fan). After I stop my car, the preasure builds up towards my expansion tank.

Now, my conclusion is either

1) i need to bleed my radiator water (not only the engine)
2) replace my termostat.

Ok, if i do the item 1 above. Let's see my problem comes back again or not.

If yes, what else could it be ? my water pump or termostat ?????

If water leaks into my head gasket, i do believe I will see milky oil when i pull up my dip stick. And also, oilly water in my expansion tank.

Any ideas from sifus here...

Eh how come this thread suddenly become Elwine's ?

anyhoo....elwine you can start with bleeding the system first.

Bleeding the system is fairly easy, do it every time you change coolant. I change mine almost every year. The bleeder screw is on top of the themostat housing.
Park you car on an incline. start the engine and remove the screw. keep adding water in the expansion tank until coolant seeps out from the bleeder hole, let it run a while befor you tighten the screw.

To determine if your thermostat is the culprit, you can actually run the system without the thermostat. If there is no overheating then confirmed you thermostat is malfunctioning. Make sure also you radiator fan is working/kicks in if it electric. If it is the clutch type then you can test if the cluctch is weak by using a simple test.


REzzy,

back to your original question of coolant leaking. In normal running condition you should not be loosing coolant so rapidly. unless you drive you car a lot under very hot condition like in traffic jam and very hot days etc. If you are sure the leakage is not coming from the hoses, there is another avenue you can check. The coolant temp sensor has an o ring that will shrink over time. a lot of coolant can seep out from there overtime.

 

[rezzy3181]

Ok guy found out my faults.... on the 21st when I visited the radiator shop when another friend our member from Segamat call me & came all the way to do his radiator so I check my pressure, shit at the radiator both ends small leaks and one hose clip at the back of the oil filter to be tighten but on running and stop never see any water leaks on the floor or when I open the bonnet. so my findings is clear waiting time to change probably whole set.

Now back to our friends car I didn't realize that he change the expansion tank only as there is a crack, not knowing that can get saperately.
Then came the bill that cost him with w/manship, seals and tank 400 plus if not wrong the tank cost rm380 or 350 well for me if that is the case I will go for whole set together will be better about 650 got to check the price again, that is in Seremban ok so up lah abit, finish off to my house as he needs a new cap which is not in good shape as I normally keep when I change new and mind are still in good condition, shit where I place it looking everwhere could'nt find.... reach my house stop the car saw his car water pouring out so I told him gone lah thats why I prefer to change whole set. so call the shop and go back there for pressure check again, surprise that no leaks when he go back WHY? and till now no news from him what happen. Why I say better to get full set is the joints critical part if not done properly will leak again so if full set done by factory could be better tak. I will call him about it as he gave his daughter that e30/m40 so make sure all ok student mah lucky anak just like axle lah. second thought I notice that that shop a nut fill water full lah and maybe that is the cause of overflow as no where to go tendang lah, did told my friend why must he fill full.

Thank You to all that joint discuss on the above.