muddychris300tdi Posted November 18, 2016 Share Posted November 18, 2016 Evening all, I've had a bit of a problem tonight and would like to hear your thoughts on the matter. So I've been doing a daily 76 mile commute in my 300tdi 130 for the last few weeks with out any problems. Tonight I did the 33 miles home with no problems, I stopped for half an hour and then went out again, didn't get a mile when it started dying on me. It would rev up and then fall then rev then fall to the point of not running. After some investigation no fuel was coming through the lift pump. With a make shift water bottle filled with diesel fuel tank I managed to get it to a safe place. So I suspect it's a knacked lift pump, do you agree with me? The only reason I'm querying it is I thought they would still run without the lift pump working. Quote Link to comment Share on other sites More sharing options...
Arjan Posted November 18, 2016 Share Posted November 18, 2016 Could be a blocked fuel line. Had that coming back from the Alps. Blow them though and have a look. Quote Link to comment Share on other sites More sharing options...
muddychris300tdi Posted November 18, 2016 Author Share Posted November 18, 2016 I have thought that. It's a new tank so shouldn't be any crud in there. The manual pump leaver on the lift pump had resistance to it then had no resistance and no fuel was coming out of it. Quote Link to comment Share on other sites More sharing options...
Peaklander Posted November 18, 2016 Share Posted November 18, 2016 Agree about fuel supply. I had the same symptom years ago, not a Landy but exactly the same rise and falll. I picked up tank sediment and it got to the fuel filter glass bowl thing. I was too young and had no prior knowledge and drove about two hours like that until I got home. Cleared the filter the next day and it was fine. Quote Link to comment Share on other sites More sharing options...
ericobrave Posted November 19, 2016 Share Posted November 19, 2016 I've had that happen and caused by fuel lines becoming loose at connections to the tank 1 Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted November 19, 2016 Share Posted November 19, 2016 Certainly not the lift pump, failure of that leads to only a minimal loss of performance . As the others have said, it'd more likely to be a lack of fuel caused by air leak or by blockage. HTH Mo Quote Link to comment Share on other sites More sharing options...
reb78 Posted November 19, 2016 Share Posted November 19, 2016 20 minutes ago, Mo Murphy said: Certainly not the lift pump, failure of that leads to only a minimal loss of performance . Just to clarify, I'd agree with that unless it's physically leaking. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted November 19, 2016 Share Posted November 19, 2016 In fact, I had this once and uncle had to come out and tow me home. I had driven about 30 miles out into the sticks to pick up a forum purchase. Half way home the engine almost died then picked up then tried to die again and became impossible to drive on a small windy country road. Turned out to be the fuel filler cap. It had lost its ability to breathe, mysteriously. Once undone and removed all was well, refitted and was fine and has been since. Something you could look at anyway ... HTH Mo Quote Link to comment Share on other sites More sharing options...
muddychris300tdi Posted November 19, 2016 Author Share Posted November 19, 2016 I will have a good look later, I'm currently moving house I did notice that the fixed infeed pipe in the lift pump could be turned so it could have been sucking air in. Quote Link to comment Share on other sites More sharing options...
muddychris300tdi Posted November 20, 2016 Author Share Posted November 20, 2016 So I went and sorted it this morning. First thing I did was try and blow down the line from the tank. I couldn't blow down it at first and then with a pop it cleared. So there must be something floating around in my tank that blocked it. I fitted the new Delphi lift pump I picked up yesterday while I had the pipes off. Thanks for your input. Quote Link to comment Share on other sites More sharing options...
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