broomie Posted January 17, 2007 Share Posted January 17, 2007 had my head gasket done on my 1994 n/a the garage sent the head off to be pressure tested & skimmed it all came back fine so i instructed the garage to fit the new head gasket and put it all back together. all back together fine, but the cooling systems still pressurising. theres got to be a crack in the head somewhere surely or is there anything else that could be causing this? does anyone no any places/any one i can get a head from? new or recon! Cheers Quote Link to comment Share on other sites More sharing options...
Jake Posted January 17, 2007 Share Posted January 17, 2007 "the cooling systems still pressurising" not sure what you mean there mate. The cooling system is supposed to be pressurized when it's hot. Quote Link to comment Share on other sites More sharing options...
Tom Posted January 17, 2007 Share Posted January 17, 2007 What's the mileage on the car? and mods? in all the time I've been on here I've never read about a HG having to be replaced, especially on an n/a, it all sounds strange! Quote Link to comment Share on other sites More sharing options...
broomie Posted January 17, 2007 Author Share Posted January 17, 2007 78k just an induction kit on engine! the hg had deffo gone got it block tested in 3 different garages! Quote Link to comment Share on other sites More sharing options...
broomie Posted January 17, 2007 Author Share Posted January 17, 2007 what kind of pressure should they pressurise to?? in bar? Quote Link to comment Share on other sites More sharing options...
broomie Posted January 17, 2007 Author Share Posted January 17, 2007 "the cooling systems still pressurising" not sure what you mean there mate. The cooling system is supposed to be pressurized when it's hot. i think they mean exhaust fumes are still getting into the cooling system! Quote Link to comment Share on other sites More sharing options...
Jake Posted January 17, 2007 Share Posted January 17, 2007 Oh I see. Thanks Quote Link to comment Share on other sites More sharing options...
NUTKIN Posted January 17, 2007 Share Posted January 17, 2007 Right pressurising the system i take it u mean it gets hot an spits out the water this can be for a few reasons. The first is the water pump not working properly. The thermostat not opening all the way. The water system got airlocks in it can do it. The fan not kicking in. The rad cap not holding up to the pressure. Quote Link to comment Share on other sites More sharing options...
Tom Posted January 17, 2007 Share Posted January 17, 2007 what kind of pressure should they pressurise to?? in bar? Well I think the standard rad cap is 0.9 bar (near 15psi), and I'm pretty sure thats the norm on most cars, i think they mean exhaust fumes are still getting into the cooling system! Quote Link to comment Share on other sites More sharing options...
NUTKIN Posted January 17, 2007 Share Posted January 17, 2007 U need to find out if they are sure that EXHAUST gasses are getting into system there are tests they can do, cause if they are its a head thing or gasket not fitted right. Quote Link to comment Share on other sites More sharing options...
broomie Posted January 17, 2007 Author Share Posted January 17, 2007 U need to find out if they are sure that EXHAUST gasses are getting into system there are tests they can do, cause if they are its a head thing or gasket not fitted right. will do thanks for your help Quote Link to comment Share on other sites More sharing options...
broomie Posted January 17, 2007 Author Share Posted January 17, 2007 even before i got the HG replaced the top rad hose would go rock solid after running to 2-3 mins is this normal? Quote Link to comment Share on other sites More sharing options...
jakewebster Posted January 17, 2007 Share Posted January 17, 2007 I would replace the rad cap first mate. I got the HG done on my TT, dont know if it actually needed now, the rad cap seemed to nearly sort it out. The rad had clogged up in the centre on mine too. See Nic about the rad cap, he is the boy! Quote Link to comment Share on other sites More sharing options...
Scooter Posted January 17, 2007 Share Posted January 17, 2007 read this thread re your hard top pipe.............. page 1 & 2........ Quote Link to comment Share on other sites More sharing options...
broomie Posted January 17, 2007 Author Share Posted January 17, 2007 I would replace the rad cap first mate. I got the HG done on my TT, dont know if it actually needed now, the rad cap seemed to nearly sort it out. The rad had clogged up in the centre on mine too. See Nic about the rad cap, he is the boy! i had a new rad and rad cap put on it about 1000miles ago so i dont think it will be that Quote Link to comment Share on other sites More sharing options...
NUTKIN Posted January 17, 2007 Share Posted January 17, 2007 The rad cap would only need replacing if it wasnt holdin the pressure this is not the case then so cap is fine. U can get the rad itself flow checked to see if its blocked because this will cause the same problem as your havin. Because the top hose is getting hard its not your thermostat so rule that out. Quote Link to comment Share on other sites More sharing options...
broomie Posted January 17, 2007 Author Share Posted January 17, 2007 the rad was brand new 1000mile ago is it likely that it would get blocked that quickly? Quote Link to comment Share on other sites More sharing options...
NUTKIN Posted January 17, 2007 Share Posted January 17, 2007 Not very likely were getting somewhere here water pump? U need to get a compression test done on each cylinder to see if head gasket. Quote Link to comment Share on other sites More sharing options...
broomie Posted January 17, 2007 Author Share Posted January 17, 2007 head has just been skimmed and new gasket so i doubt its that new thermostats been fitted and theyve check the water pump and said its working fine???? Quote Link to comment Share on other sites More sharing options...
NUTKIN Posted January 18, 2007 Share Posted January 18, 2007 So it did do this before the head gasket was replaced an now all this works been done its still doing it is this correct or are these new problems Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.