Is there a certain torque spec in which to tighten the plastic cap on a fuel filter housing ? On my 2000 CTD, the cap is tight --snug plus
1/4 turn-- and when it is warm outside there is no problem but at night when it drops to the mid 20's I get some leaking around the top of the cap. This weekend I plan to replace the filter and O ring and want to get it tight enough but not too tight to damage the cap, housing, filter, or O ring. Any help would be appreciated.