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Originally Posted by scruffboy
I just replaced O2 sensor, do you think it would give me any indications seeing as it is so new? Also, If they perform compression test on coolant system, could that pressure blow the HG? That's what I'm worried about, them pumping up the system and creating more leaks. I made an appointment for this afternoon with a shop my friend used to work at. I plan to hang around and check what they do. Could valve cover gaskets go without blowing HG? I noticed the valve cover gasket looks a little ratty.
James
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they pump up the pressure to just above were the pressure would be when your car was runing normaly so it wont create any leaks unless they did it when the engine was super cold.