
mbshop
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be carefull of what you do. first, which car you talking about? what does it have in it ? if you mix gases or install stop leak most shops will test for this and then refuse to work on yer car. if yer gonna work on yer owb system then study up. if you have no gas in the system then you have air. air and moisture is death to the a/c system. so first look around and see if you see an oily area on the system. this is good sign of the leaking area. if not then charge it with the appropriate gas with a dye and oil to check for a leak. you will need a black light or a white cloth to rub on the system and check for dye. fix what you find is leaking. you MUST vac the system at least for an hour. you MUST replace the dryer just before vac the system. charge with the appropriate gas and oil charge. george
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you are really rich. you need to find out why. check the o2 operation and also check for vac leaks as this will drive the o2 to richen up. once you find what the problem is you should be ok. if yer hc is still kinda borderline even after the c.o. is ok then you got a bad cat converter. probably ruined due to the rich running. sometimes you can rehab a converter if its not physically ruined by going down the road in sec gear at about 3,500 to 4,000 rpms for a few minutes. as mentioned already a tune really needs to be done first if not done recently. george
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just as you last stated the oil/engine is not heating up enough nor long enough to burn off the condensation. if you cannot burn this off regularly then i suggest that you change yer oil more often. this stuff produces hyd acid that can eat out yer eng especially the bearings. as it stands yer eng is just getting heated up. try to go on longer trips or yer back to the more frequent oil changes. there are tests to see if you have a bad hg but i doubt it. george
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almost any silicone style sealer should not be used on an engine. you run a chance of getting an oil passage plugged with that stuff. if you do need to use something there are alternatives. also use very little. it goes a long way. most rubber gaskets like the v/c gasket are made to not use sealer and as mentioned you could make things worse. dry off the sealing surface before install and that rubber will almost bond with the metal. george