I have the same issue at 585mph when cruising along at 33000 feet As soon as I get up to 39000 or 41000 the noise is much lower. That was very satisfying Servicing is more expensive on the diesel unfortunately. Dealer say it is the high pressure fuel pump. I do most of the services after we came out of warranty some 75K miles ago. Dealer told me they have already replaced the high pressure fuel pump serpentine belt and fuel filter steam cleaned the engine bay. This will prevent gelling but more importantly stop water from forming in the fuel.
We will be accessing the fuel sending unit first, so locate the first aid box on the package tray. Although if its the pre filter then wouldn't that mean its connected to the main filter as well? Here is the tank with the panel removed. Diconnect the the electrical conecction and the fuel lines. The filter sits in the valley between the cylinder banks in plain sight once you remove the engine cover. Original to the car and is only designed to prevent large chunks of stuff from leaving the tank.
Concerning the filter are you writing about one filter or two I assume Sorry for the confusion. Ramps are easier to use and safer. Now get out and drive that car! These tabs release the internal latches in the fitting. Use a small screwdriver to remove the attaching clip. While looking at the price between the 320 diesel and 450 there is about an average of 10000 difference in the 07 to 08 models. Same thing happened to me once because I almost ran it out of diesel which introduces air into the system. In older models it is possible to have the pump wiring burn and short out.
Check for any fuel leakage while in there. Unless you're a mechanic type, I would suggest this be done by a shop. The opposite end at cylinder 6 has a stub of hose with a plug stuffed in it. You need to remove some of the intake hoses from ontop and then get your hand down in there and unscrew the covers. These are custom made and very durable. Even after evacuating the tank there will be about a quart of fuel left over.
Once you have located this cover, pry it up--I don't … think there will be any screws. . Take the two seals I told you not to loose clean them up and then use some clear silicon to glue them back in place. Vehicle repairs and customizations normally demand replacing parts. All of these hoses can be replaced in the kit from dieselgiant. These rubber hoses are secured on my car with worm screw clamps. When I pulled it into my garage and shut it off the electric radiator fan was running.
You can see the one gasket shifted slightly while I was maneuvering the tank in the car, but I was able to move it back since the silicone had not set up yet. Always keep fuel in container specifically designed for fuel storgage. You will then find a black metal plate, remove this and the top of the fuel tank will be exposed. Also as a safety tip please remember anytime you are working on, around or under your car, to wear safety glasses and secure the car with wheel stops and approved jack stands! Install the fuel sending unit to the pump bracket. You could easily cut a wiring harness beneath it. Fram Tough Guard air filter features a heavier screen for increased durability especially in tough driving conditions.
It seems that there is air getting into the line between the large fuel filter and the lift pump. The remainder of the supply side lines are all the plug in type. Whenver servicing the fuel system, always work in a well ventilated area. Clean off the top of this before removing it. Two bolts on each side hold the tank to the chassis. Those clips are counter intuitive.
It goes from the preheater to the pre filter to the shutoff to the lift pump to the main filter back through the shutoff and into the injection pump. If you compare the cost of fuel to run both of these vehicles 10000 would buy you an extra tank of gas every month for 8. They really should have put 2 bolts on that clamp. There is an o-ring at this junction that is forgotten and is notorious for leaking. Thank you so much for your help, I know that the injector return lines and banjo bolt on the back of the injection pump are fine, I think the air leak will be somewhere between the fuel filters.
I removed the end from the filter, cleaned inside where the O ring seated, cleaned everything up and checked the O ring. We pull the tank from the inside of the trunk. There will be an access cover, about the size of a saucer, glued down with caulk under the trunk carpet just behind the back seat, or under the back seat bottom. At the other end I had a catch bottle set up to catch the mineral spirits and gunk that will come out of the bottle. Be careful turning as needed as to not damage the float. What sent the bill up another 1500 was the diagnosis that my air intake snorkle needed to be replaced.