#16: Re: How to increase the cooling system's effieciency ?? Author: MohdEqbal, Location: United Arab EmiratesPosted: Sun Jul 11, 2010 12:13 am ---- yesterday it was around 47 and temp gauge went up alllllllll the way
Had to <<stop>> and take a break
#17: Re: How to increase the cooling system's effieciency ?? Author: V9977, Location: Athens, GreecePosted: Wed Jul 14, 2010 5:36 am ----
MohdEqbal wrote:
yesterday it was around 47
Ouch. Give this man a drink I'm telling ya.
Heat like this often causes people to colapse
or go to the hospital over here.
Anyway you've got to sort it out really. Radiator is
up next I recon. Gasket shouldn't cause all this trouble
unless it's so gone that you're loosing loads of coolant
in which case there would be other symptoms as well surely.
#18: Re: How to increase the cooling system's effieciency ?? Author: Steve206, Location: UKPosted: Wed Jul 14, 2010 5:58 am ---- Defintetly not the waterpump, your engine would have blown by now. I would say that it was just the outside air temp. Does the fan come on when you reach 90?
#19: Re: How to increase the cooling system's effieciency ?? Author: V9977, Location: Athens, GreecePosted: Wed Jul 14, 2010 6:58 am ----
Steve206 wrote:
Defintetly not the waterpump, your engine would have blown by now. I would say that it was just the outside air temp. Does the fan come on when you reach 90?
I have used the pug in ambient temperatures of 50+ C and it
never overheated or went above 92 C on the gauge (see earlier
posts). He is definately overheating.
I think his fan is working and a lot of things have been covered already.
#20: Re: How to increase the cooling system's effieciency ?? Author: MohdEqbal, Location: United Arab EmiratesPosted: Thu Jul 15, 2010 2:12 am ---- Updates...
Replacing the cap did help the overpressure in the coolant system. Remember, I was coolant system parts kept failing one after the other. The last thing was a very minor leak in the rad. and as soon as I replaced the cap the leak is gone.
Now the bad news is .. I am still loosing coolant :S
and as you would all suggest .. I think it's the head gasket .. simply explains everything .. on highway speeds rpm is high and pressure escapes from combustion chambers to coolant .. heating it up and causing it to over pressurize and blow up parts of the cooling system.
and at other times coolant leaks into cyl. and thats why I'm loosing coolant.
There is no trace of white smoke in the exhaust though (could it be the amb. heat?) ... please tell me if my analysis is correct !!
#21: Re: How to increase the cooling system's effieciency ?? Author: MohdEqbal, Location: United Arab EmiratesPosted: Thu Jul 15, 2010 2:14 am ----
Steve206 wrote:
Defintetly not the waterpump, your engine would have blown by now. I would say that it was just the outside air temp. Does the fan come on when you reach 90?
when I run the engine and open the cap .. I can see water rushing in from the upper tube .. pull the throttle cable and you can see more flow.
I think the pump is fine
and the fan is fine also
#22: Re: How to increase the cooling system's effieciency ?? Author: V9977, Location: Athens, GreecePosted: Thu Jul 15, 2010 4:31 am ---- If you are refering to the small diameter tube
which connects from the radiator to the coolant
bottle, there shouldn't be water rushing through
that tube I don't think!
It is for back pressure (air) and vacum creation
to get rid of minor air in the system normaly.
I think you should look into this as there could be a
problem with the radiator. On the other hand, gasket
could well be causing trouble but surely you would see
other symptoms like dribling water drops from the
exhaust or whitish gases.
Maybe ask your pug mechanic to do a pressure test of
the cooling circuit which would point-out if there is coolant
loss from somewhere or the gasket?
#23: Re: How to increase the cooling system's effieciency ?? Author: jacknife, Location: North ShieldsPosted: Fri Jul 16, 2010 1:01 pm ---- If you had a head gasket failure, you would know about it very quick, the system is design to run at pressure (15psi or 1 bar) to which water does not boil till 121C, which if your getting temps around 92-100, and you keep getting leaks then something is blocked, and the rad is the first place I would be looking. unless the water ways of the engine are blocked, and I dont know how to test for either, just seems odd.
#24: Re: How to increase the cooling system's effieciency ?? Author: MohdEqbal, Location: United Arab EmiratesPosted: Tue Sep 28, 2010 1:07 pm ---- Guys .. after such a long time it turns out to be the radiator .. I opened (in an attempt to recondition it) and found horrible amount of gunk (goo of rust) blocking almost half of the radiator .. so effectively it had to work twice as much to cool the engine .. this explains the over heating..
also water pump was working overtime due to blockage .. and that explains the sudden random leaks here and there..
now I have a brand new (pattern part) replacement which is working like a charm
thanks to you all ..
#25: Re: How to increase the cooling system's effieciency ?? Author: jacknife, Location: North ShieldsPosted: Tue Sep 28, 2010 3:06 pm ---- Nice one, had to be one of them, Rads the easy one to fix.
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