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Question
AC takes a long time to get cold.
Hello. This vehicle originally may have been equipped with R-12 refrigerant and has been converted to R-134A refrigerant. If this is the case, the system will leak out the R-134A over time out of the seals, hoses, and compressor since...
Question
what could cause my mercedes 560sec to smoke when it warms up but not all the time
A very common failure on your engine when it gets old is the valve stem seals. These little synthetic seals are under the valve springs and are there to prevent the lubricating oil from running down the valve stems into...
Question
Hot start issues
The air fuel ratio is off on your hot starts probably due to sensors or controls operating out of range or perhaps due to a stuck open EGR valve. Heat affects ignition coils and can also adversely affect sensors such...

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