madmunky Posted December 28, 2007 Share Posted December 28, 2007 Christmas eve the car overheated on my way home from the shops, the temp went up to around 3/4 of the way any ways got home and steam was coming out the expansion tank, let the car cooled down and the topped up the water / antifreeze run the car and it was ok so went up the road and again it started to get hot so back home i went after that i removed the thermostat which isn't working but also when looking at the oil cap the top of the cap looked creamy and oil inside and on the dip stick is fine. Just done a compression test and all cylinders are running 160 to 180psi. I just want to know if people think the head gasket is ok, im waiting on a new thermostat at the moment, whats also the best way of checking the water pump? Also while im on the subject does anyone know if you can buy the connectors which connect the main loom to the coil packs as the connectors just seem to full apart when i disconnected some of them. Quote Link to comment Share on other sites More sharing options...
Havard Posted December 28, 2007 Share Posted December 28, 2007 I thought that the creamy oil was a defo sign of head gasket failure. Hope I'm wrong.... H. Quote Link to comment Share on other sites More sharing options...
gaz1 Posted December 28, 2007 Share Posted December 28, 2007 i would say its condensation in the oil cap, unless its a daily use car, it could be the thermostat, pics would help though Quote Link to comment Share on other sites More sharing options...
TLicense Posted December 28, 2007 Share Posted December 28, 2007 Not necessarily. If the car has just been started, you'll get condensation build up in the engine, which can give a "faux head gasket failure" look to the oil. If the engine has been idling/running for a while any moisture should have evaporated. Getting good results from a compression check isn't a sure fire way of diagnosing a blown headgasket either. It'll only work if the failure is into a cylinder bore. If it's an oil gallery to a coolant journal then it will still have good compression. The coil pack clips are a known pain in the arse. If you do a search in the FAQ's there's a good guide on replacing them. Quote Link to comment Share on other sites More sharing options...
madmunky Posted December 28, 2007 Author Share Posted December 28, 2007 Thanks for the replies as there any sure way to test the head gasket then? Quote Link to comment Share on other sites More sharing options...
madmunky Posted December 28, 2007 Author Share Posted December 28, 2007 after some more reading it looks like a sniffer test is the best way of checking the HG, ill get the coil pack connectors fixed i think then get it up to the garage. Quote Link to comment Share on other sites More sharing options...
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