pos
Well-Known Member
Hello,
Just a quick question regarding fuel filters, particularly those for 200 / 300 tdi engines. I have always been led to believe that the central channel in the fuel filter (i.e. the internal reservoir where fuel is stored after being passed through the filter media / paper) is supposed to be full to the brim with diesel, is this right? I have used various different brands of fuel filter and the last two times that I've changed them (today included) I have found a lot of air at the top of the canister which I imagine is only going to be drawn into the system before firing. My lift pump seems to be in good working order - splashing diesel at the bonnet and my fuel lines are clear too. Surely having a large area of air is only going to cause performance problems. The engine is obviously drawing fuel up to the top of the canister, but air is finding its way back into there somewhere.
Any ideas or thoughts?
-Pos
Just a quick question regarding fuel filters, particularly those for 200 / 300 tdi engines. I have always been led to believe that the central channel in the fuel filter (i.e. the internal reservoir where fuel is stored after being passed through the filter media / paper) is supposed to be full to the brim with diesel, is this right? I have used various different brands of fuel filter and the last two times that I've changed them (today included) I have found a lot of air at the top of the canister which I imagine is only going to be drawn into the system before firing. My lift pump seems to be in good working order - splashing diesel at the bonnet and my fuel lines are clear too. Surely having a large area of air is only going to cause performance problems. The engine is obviously drawing fuel up to the top of the canister, but air is finding its way back into there somewhere.
Any ideas or thoughts?
-Pos