Changing Fuel Filter: 16v c900 - SaabWorld Oct 11, 2013Replacing the fuel filter is considered a piece of routine maintenance. The Bentley manual recommends this job once every 30,000 miles, but our fuel filters are very large and many cars go a very long time without ever having it done, with few ill effects. Still, it's a job worth doing on a car you don't know. Some say it's helped them with idle, but the real symptom of a bad fuel filter isSaab WIS instructions to replace the Fuel FilterFeb 23, 2017Fuel filter change / replacementMar 07, 2015How to change the fuel pump? - SaabWorldNov 29, 2012See more results 900 Fuel Filter Replacement at Thesaabsite 1988 Saab 900S fuel filter replacement procedure. Note: Check the contents of the new fuel filter package to ensure that there are (4) new copper washers for the fuel line bolts. The replacement procedure should ideally be done when the tank is low on fuel.