defender dinky Posted April 15, 2014 Share Posted April 15, 2014 how do I remove air from my fuel lines, d90 with a 200tdi disco engine, dd Quote Link to comment Share on other sites More sharing options...
Maverik Posted April 15, 2014 Share Posted April 15, 2014 Find the leak! With a healthy lift pump and battery, they are self priming engines meaning just cranking the engine over should purge air out the system, which suggests you have a crack or damage to one of your fuel lines which is then allowing air to enter the system... How do you know you've got air in them? Some symptoms would help identify a probably leak area. Quote Link to comment Share on other sites More sharing options...
defender dinky Posted April 15, 2014 Author Share Posted April 15, 2014 on my fuel line of a section of clear pipe and I can see the air loads of it, what happened was I was having trouble with power mainly at the point where you change gear, and investigating more I found a leak it was on the fuel line, clip had came off don't now how,and the clear pipe section is on the return pipe by the pump, it's causing the engine to splutter on tick over, oh and I changed the fuel filter aswell, dd Quote Link to comment Share on other sites More sharing options...
Ex Member Posted April 15, 2014 Share Posted April 15, 2014 Yes, you need to find the leak. I would also test that the lift pump is working. They have a high failure rate. Quote Link to comment Share on other sites More sharing options...
Maverik Posted April 15, 2014 Share Posted April 15, 2014 Hmmm, are you positive all the air is out the filter? did you prime the filter before you changed it at all? the clear pipe being on the return isn't exactly a clear indicator there is air in your fuel supply lines and I wouldn't put that down to your problems. The point when changing gear is usual when the engine is revving the highest... When did you last change your lift pump? as this is connected directly to engine speed... Quote Link to comment Share on other sites More sharing options...
defender dinky Posted April 15, 2014 Author Share Posted April 15, 2014 never, had engine three year, the leak I found was and now sorted was bad when engine was running so I was presuming that was my problem with the revs, but the leak was after the pump, so could it be that there was air being sucked back, what I'm trying to do is sort out what I can see, what if I take return pipe off and let fuel run into container with engine running would this remove air from fuel lines, dd Quote Link to comment Share on other sites More sharing options...
Ex Member Posted April 15, 2014 Share Posted April 15, 2014 If there is air, the leak is before the lift pump (if it is working). As stated earlier, the system is self bleeding. You do not need to do anything to get air out of the system. Air is only there if there is a continuous leak. Look carefully over everything between the tank and the lift pump for leaks. Remove the injection pump solenoid wire. Disconnect the fuel line where it goes into the fuel filter and stick in bucket. Crank engine and see if the lift pump is working. It should pump a good flow of fuel. Quote Link to comment Share on other sites More sharing options...
defender dinky Posted April 15, 2014 Author Share Posted April 15, 2014 done what you said and got plenty of fuel gushing out, took truck up the road and loads of trouble, first of all run then no power no revs and kept cutting out, got back and took fuel filter off and it was only 1/4 full is this normal, and tried something else took arm off wastegate on turbo and cannot move wastegate is this normal I think i read in another post this should be moved easy, dd Quote Link to comment Share on other sites More sharing options...
Ex Member Posted April 15, 2014 Share Posted April 15, 2014 You have an air leak before the lift pump causing your problems. You need to fix it. Quote Link to comment Share on other sites More sharing options...
defender dinky Posted April 15, 2014 Author Share Posted April 15, 2014 between tank and lift pump Quote Link to comment Share on other sites More sharing options...
Ex Member Posted April 15, 2014 Share Posted April 15, 2014 Yes. Quote Link to comment Share on other sites More sharing options...
defender dinky Posted April 15, 2014 Author Share Posted April 15, 2014 no leak there but what I did find is that the little bleed screw on the filter housing the treads stripped, put it back in with some silicone just to try it tomorrow morning, and then sought new housing, dd Quote Link to comment Share on other sites More sharing options...
Ex Member Posted April 15, 2014 Share Posted April 15, 2014 But you do have a leak....since air is getting in. You won't see any fuel, but there is a leak. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.