i have just put new water pump headgasket timing belt etc on my car
it now runs and fine when idleing but when accelerating
there is a lot of pressure coming out of the bottle
under heavy acceleration it blew of the radiator hose that i hadnt tightened properly .

i had to bypass the heater matrix yesterday due to it bursting
could this be the main cause ?

its a 1998 escort gti ?
any ideas before i smash it up with a hammer lol
cheers kev

 

head gasket

 

just changed this ???

 

Cracked or distorted head.

 

There usually is a pressure build up in the cooling system as the water is heated, it wants to turn to steam, but because is a closed system and wont let any of it out you get a pressure build up.

I would say if a hose popped off because you didn't tighten it up properly its quite normal.

 

did you get the head skimmed/ check for flatness

 

got a full skim etc on the head ?

 

Still sounds rather fucked. With it warm and running, open the cap and see if bubbles are coming up through.

 

when it idles with the cap off to satrt with there was bubbles couming up
when giving it revs the water goes down
then put the cap on it starts to pressurise the pipes are solid then switch it off and start to release cap it hissess

 

Sounds to me like head is warped. Did you have it skimmed before refitting?

 

i would get a sniff test done.
did you change thermostat?

 

not changed thermo stat yet

 

it will be the head allways skim and test a head before refitting if the cars cooked etc

 

cracked block maybe, pressure has to come from somewhere a sniff test will tell you whats going. thermostat is clutching at straws as it would still run ok regardless. bursting a heater matrix and blowing off hoses is a major problem a leak down test would be an idea along with a compression test for a more definate answer. a quick look at the spark plugs should show if it's burning water one will be cleaner to show the problem on that cylinder

 

Why did you do the HG in the 1st place?

 

Whats a sniff test?

 

Where you get a big pipette thing to 'sniff' up some gases out of the header tank, if there's exhaust gases in there then a chemical inside the pipette will turn a different colour to indacate head gasket failiure!

 

did you fit the right water pump,cous there is 2 types


and was it doing it before you done any thing to it

 

run the car up to temp with the rad cap off.
then put cap back on and drive it.. see what happens...

sounds like something more major is wrong though sadly..