There was a recent smell of gas which prompted me to replace the engine compartment fuel lines.� 
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Today, I�am doing the engine compartment fuel line replacement.� From the looks of things, there were a few lines that had been changed by the Previous Owner(s) (PO).� The fuel injectors all appear to be original.� I was able to clean the fuel injectors with solvent, test them�and they seem to be working well.� My question is how long do a set of fuel injectors normally last?� I appreciate there must be all sorts of variables, and it may come down to the perfomance of the individual fuel injector.� My vehicle has approximately 160 Km on it.� The bus has been running well, with no noticible issues.� What sort of signs or symptoms would suggest that the fuel injectors need replacement?
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Your thoughts?
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Stuart
86 Vanagon GL 2.1 automatic