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Could an old fuel filter cause a hesitation? 700 1990

posted by  garlandw on  Fri May 9 14:36 CST 2003
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last visit: Wed Sep 10 08:58 CST 2014
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Folks, I just replaced the main fuel filter (the one under the car below the driver's seat). Judging from the degree of rust, it has been on there for a good fraction of the 335,000 km on the car. It was a Bosch filter so it must have been changed at least once. Prior to replacing the filter, the car drove well but did have a slight hesitation on takeoff - an ever so slight bogging. Since it is a stick shift B234F, it was easy to compensate. After the filter change, the hesitation seems to be gone.

Is it my imagination or is it really possible that the old filter had a sufficiently high pressure drop that it fooled up the mixture directly or threw off the computer so that the mixture was wrong?

Bill
--
Volvo Info Site 1990 745GLE 16valve






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