car problems!

[flynnske]

Ok ive got a ke70 and i found out a few weeks ago it had a blown head gasket so i got that replaced and it still overheated. so i got my radiator cleaned out today which was 40% blocked. ive only driven it for about 10 minutes but i still think its not fixed. the water in my radiator is still bubbling up when i turn my car on, is that normal? do u rekon it could be my water pump? last thing i can think of.

Any help would be great cos im still learning. Thanks

[Nikkojoe]

You may have blown your headgasket again (between water and combustion). You usually get a little bit of turbulance in the water when you look at the filler neck on the radiator, but if you get a lot of bubbles floating up top (and never ending) its usually bhg.

Any continuous condensation out of the exhaust?

[flynnske]

WTF! that sucks, how does the head gasket blow again after i just got it replaced? so u dont rekon it would be the waterpump? cheers for your help

[blair]

your thermostat may not be opening far enough? pull the tacker off and rip the guts out anyway lol.

[biggo]

cracked head

[trd4ag]

hey mate when you check the water in the radiator you would have the cap off correct?
when the cap is removed the boiling point off the coolant returns to normal so if your car is running warm and then you release the radiator cap not trying to make you sound stupid but the radiator cap allows a certan amount of pressure to build up in your cooling system thus raising the boiling point of the coolant so when the cap is removed as i stated above the boiling point will return to standard witch will make the coolant boil when cap released if this happens this is normal there are a few things that you check your self to find out if the head gasket has blown again.

1) check your engine oil for any contamination ie coolant mixing with oil reffered to as a chocolate milkshake.

2) do the same with the radiator check that the coolant is clean and no oil is mixing.

3) if these are ok then pull your oil filler cap of and check for condensation easy to check just tap cap on hand and if dropplets are seen on hand this can mean there is water/coolant entering the combustion camber and as evapourates leves condensation.

4) if you cant see anthing wrong you can carry out wat is called a tk test witch tests if there is any exhaust gases in cooling system ie by a leaking combustion chamber (headgasket)

if these are all ok then i would probably say that your head gasket is ok

your question with the water pump is a good one if this is non operational then there is no fresh coolant flowing through the motor witch would make the motor over heat.
but it is rare to see a water pump fail not saying they dont but

1) if its still being driven by the drive belt/ acc belt then it will still be turning over and will still flow.

2) if it has failed it would have become very noisy before it had failed.

all the boys make valued points to

you can check if your water pump and thermostat are working at the same time when the car is at running temp say a guarter to half on temp gauge turn it off and pull the top radiator hose off this would be the hose coming from the head not the pump

***** note release the pressure in radiator before doing this just pull the cap off*********

1 check the temp of the hose should be pretty hot by now witch would mean the thermostat is open and then when hose is off get a bucket and place under hose then start car and if water flows into bucket the pump is okay but if thermostat is closed/seized then no flow will come out.

was the head checked for straightness and cracked tested when the head gasket was replaced? and were the jackets checked in the block for blockages?

cheers matt

[flynnske]

thanks heaps for your help guys, ive taken it into a shop to get it checked out. ill tell yous whats wrong with it when i find out. thanks again guys

[Golberg]

Because a blown head gasket doesn't usually have anything to do with a head gasket fault at all...

A blown head gasket is usually a symptom of some other problem, usually cooling related. Take for example the AE71 I bought, had a BHG. So I swapped a fresh 4AC in, then quickly noted that the heater tap was leaking coolant very quickly. Which basically told me that the reason the old motor blew one is because all the coolant leaked out, engine overheated then the gasket blew.

So I swapped in a new tap and the car runs just fine with its new motor.

[flynnske]

turned out to be my radiator for some reason, i had a bigger one in there and thats what must of made it fk up. but i got a standard radiator off my mate and put it in and is now going fine...

what do u rekon to go is there?

[lolwat]

other rad is blocked
it would be cooking the coolant in the top end and the bottom would be cold (rad) as the thermostat(guessing) is near the bottom, and if the rad was blocked it wouldn't flow and the thermostat wouldn't open(which wouldn't help either)