If you drive a landcruiser 100 / 105 series with 4.2 diesel. 1HZ & 1HD-FTE. You may have the wrong fuel filter in it . Some of the big name brands have got it wrong. Fuel filters for the 80 series LC not the best for the 100 /105 series. Go to You Tube & take a look at Berrima Diesel ( wrong diesel filters Toyota LC 100 )