JST Posted August 5, 2014 Share Posted August 5, 2014 Morning all, i have a 200disco lump in a defender, highish mileage. when the vehicle is left for a period exceeding 2 days without starting on the flat it struggles to fire, will turn over strongly upto 6 times then catch, cough a bit and then fire again. If its left facing uphill, it will do this after 1 day not tried it facing downhill. I am assuming air is entering the fuel system as some point and causing the issue? Would this sound about right and if so where are the likely points to check? have already checked leakoffs and fuel filter housing/fitting, bleed point. Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted August 5, 2014 Share Posted August 5, 2014 Certainly sounds like air getting into the fuel system. When mine has this problem it is down to the leakoff banjos loosening off. Another Tdi I had had a different type of pipe joining the leakoff banjos, it was a braided fuel hose. This perished and started letting air in through the hose, so even though the banjos were tight the issue still presented itself. I know you said you've checked them but it might be that, wasn't immediately obvious on mine as it looked OK externally. Quote Link to comment Share on other sites More sharing options...
JST Posted August 5, 2014 Author Share Posted August 5, 2014 cheers James, will do that, i visually checked them for weapage, i didnt try tightening them as mind was thinking fuel pump or lift pump really. will check them if it ever stops raining! thank you Quote Link to comment Share on other sites More sharing options...
simonb Posted August 5, 2014 Share Posted August 5, 2014 Or lift pump - leaky internal valves allowing fuel to drain down. That was the cause on my 300Tdi with the same symptoms as you. Quote Link to comment Share on other sites More sharing options...
JST Posted August 5, 2014 Author Share Posted August 5, 2014 i am hoping no though Simon! found a leak off banjo that snipped up so time will no doubt tell, thanks for help guys. Quote Link to comment Share on other sites More sharing options...
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