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as above i live in england and the forums in england no one seems to help!!??

i have a r32 gtr and im having some problems. its running 400bhp+ with a few mods. cut a long story short i have had the car for a few months no problems running sweet as a nut, then a slight miss occured only under full throttle above 5000rpm, everyone said coil packs which i still think it is.

nyway my rad blew up so i got a new 1, then i realised my water pump had gone so i replaced that. got car running again. my car is not over heating but seems to be runnig ever so slightlt warmer but there has been an increase in the weather.

people r saying that my head is cracked ? could this be? there is no loss in performance not drop in oil pressure and no mixture of oil and water.

the car from day one has bubbled after driving hard and been parked up and is still doing it now could this be anything to do with it?

would really appreciate some help need to get sorted

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If you have a cracked head or a blown h/gasket you will be loosing coolant , the coolant level will go down bellow the low level in the plastic tank .

How do you know its running hotter ? do you have a reliable temp gauge ? power f/c ? Or you just look at the stock gauge ? When the stock gauge is in the middle the temp can vary from 80- 105 degrees !

When you replaced the radiator did you use the same one ? same size core ? smaller / larger ? Is the auxiliary fan ( air cond fan ) connected ? is the clutch fan working ?

Did you find out the reason the rad blew up ?

the car from day one has bubbled after driving hard and been parked up and is still doing it now could this be anything to do with it?

It might simply be that the system has not been bled properly and/or there are blockages in one of a miriad of pipes caused by corrosion. The bubbling suggests you have air pockets or hot spots in the system. I would suggest a complete drain and flush is required (inc removal of the block drain) followed by a careful refill and bleed.

is there no other reason for slow loss of coolant other than cracked head or leaking gasket? I have a very gradual loss of coolant...can't see any coolant leaking etc....the car is coming up to 100k so am looking at replacing water pump and pipes....just hope i don't have a cracked head.

There is no coolant in the engine oil and my gasket was replaced recently.

If you have a cracked head or a blown h/gasket you will be loosing coolant , the coolant level will go down bellow the low level in the plastic tank .

How do you know its running hotter ? do you have a reliable temp gauge ? power f/c ? Or you just look at the stock gauge ? When the stock gauge is in the middle the temp can vary from 80- 105 degrees !

When you replaced the radiator did you use the same one ? same size core ? smaller / larger ? Is the auxiliary fan ( air cond fan ) connected ? is the clutch fan working ?  

Did you find out the reason the rad blew up ?

never found out why rad gave in there wasnt any rise in temp so just put it down to being 16year old, replaced with same size core.

i only have two fans the main one and air con one both working fine.

im just reading the stock gauge.

is there any definate checks i can do for a cracked head/gasket??

cheers for the replys much more help than england.

the bubbling only seems to occur after driving hard?? ive tried bleeding from everywhere?? this cars is doing my head in!!

a radiator shop should be able to do a test where they can check for hydrocarbons(fuel) in the water, the test solution changes colour when hydrocarbons are present. can't remember the name of the test but they hook up the tester where the radiator cap goes.

Also are you sure there are no leaks from any of the other hoses not being tight enough. don't forget to turn heater on fully when bleeding the air out of cooling system if you do it yourself.

A pressure test will tell you if you have cracked head of blown h/gasket .

Have you checked the radiator cap ?

You cant go on the stock temp gauge , you are going to have to test it with a known good gauge then you will see what the temp gets up to .

A pressure test will tell you if you have cracked head of blown h/gasket .

Have you checked the radiator cap ?

You cant go on the stock temp gauge , you are going to have to test it with a known good gauge then you will see what the temp gets up to .

found a tiny hole last night in new water pump!! long story anyway sorted and my heater is working now not just on FH like b4. but the worring thing its still missing and bubbling after a hard drive. the missing is wen it gets hot and its after 5000rpm at full throttle not half throttle??? is this signs of a crack opening with heat? tried changing one coil pack at a time and no joy. my local mechanic says its def the head cracked or gasket?? cheers for ur replys

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