300tdi Air in fuel System

Dear All

Thanks for the help in advance

I have been having a hard start in my 300tdi since I bought it When I dont use for a +-3 days (it’s not always hard start but 70% of the time).

I think I have air in the System because I have to use the lift pump , I unbolt the breather bolt in the fuel filter and I have air because I see bubbles and only fuel coming out after a lot of pumping. After the pump the car starts fine.

I have already change the lift pump and the pipe that goes from the fuel sender in the tank to the lift pump. ( I took out the sedimenter).

I think the problem happens more When the fuel tank is low.

Also, my glow plugs dont work However I think it isnt the glow plugs since I have air in the System.

Is there anything I should check? Fuel sender? Return fuel pipe to the tank? Some valve between the fuel filter and the injection pump that I dont know of?

Thanks a lot!

Leak off pipes

julianf said:

Leak off pipes

Click to expand...

Thank you very much for the tip, I Will change and see how it goes!

Just a quick update, the pipes where like this. Haven't made a proper test yet but anyhow they were ruined.

Thanks again for the tip

In theory the leak off pipes can't allow air into your fuel filter - that's just theory though and Land Rover have shown us all it's capable of achieving the impossible

Have made a few tests and For now the engine has been starting at the first time.

Thank you for the help

Daniel781 said:

Have made a few tests and For now the engine has been starting at the first time.

Thank you for the help

Click to expand...

Possibly one of the cheapest, easiest, fixes you will ever get.

Enjoy it whilst it lasts! : )