MaxDef Posted January 24, 2011 Share Posted January 24, 2011 A few weeks ago I ran out of fuel with my Def Since then I have a problem with the acceleration in 4th an 5th gear. It works well on lower rpm, but when I push down the accelerator, he starts to shake and loses power. Last weekend I changed my fuel filter and bleeded the system, hoping the problem would be solved... But it still doesn't run properly. In the lower gears (1,2 and 3) there are no problems even in higher rpm Does anyone have a clue what the problem might be ? (excuse my English writing... I'm belgian and try very best in writing english) Max Quote Link to comment Share on other sites More sharing options...
Turnip Posted January 24, 2011 Share Posted January 24, 2011 Thats a strange one Max! Im guessing that perhaps running the tank very low disturbed some muck and pulled it through the fuel line. I expect it shows up more in 4 and 5 because you are using more power / fuel in the higher gears? I would check that the lift pump on the engine block - the thing with the priming lever - hasnt become blocked and is restricting your fuel? Is is a factory fit 200 TDI? Your English is fine! Phil Quote Link to comment Share on other sites More sharing options...
western Posted January 24, 2011 Share Posted January 24, 2011 possibly the pick up pipe in the tank is partly blocked or the lift pump is not as good as it should be at higher rpm, might be worth removing the fuel pipe [from tank to lift pump] & blowing it through from the engine end back to tank,which will require more bleeding aftewards, if there is anything in the end of the pipe it will hopefully dislodge or it's a tank out job to make it's all clean & good inside the tank. Quote Link to comment Share on other sites More sharing options...
MaxDef Posted January 24, 2011 Author Share Posted January 24, 2011 Yes it's a factory fit engine (december 1990) I bought it only a few months ago. It has 230000kms but was rebuild a 180000kms by the previous owner Is it easy to check or clean this pump ? When I changed the fuel filter it worked fine(operating the lever manually) Max Quote Link to comment Share on other sites More sharing options...
MaxDef Posted January 25, 2011 Author Share Posted January 25, 2011 Thanks for your advise ! I'll try to fix it in the coming days. I'll keep you posted on the result. Max Quote Link to comment Share on other sites More sharing options...
MaxDef Posted January 29, 2011 Author Share Posted January 29, 2011 possibly the pick up pipe in the tank is partly blocked or the lift pump is not as good as it should be at higher rpm, might be worth removing the fuel pipe [from tank to lift pump] & blowing it through from the engine end back to tank,which will require more bleeding aftewards, if there is anything in the end of the pipe it will hopefully dislodge or it's a tank out job to make it's all clean & good inside the tank. Yesterday I blew the fuel line through, but with no final result. For a few kilometers he drove well, but after a while he began to shake again. I suppose there is a lot of dirt in the tank. Tuesday next week the tank goes out and will be cleaned completely... Hopefully it'll work Max Quote Link to comment Share on other sites More sharing options...
reb78 Posted January 29, 2011 Share Posted January 29, 2011 I think, for the cost (~£25 for a Delphi one), i might try a new lift pump. It sounds similar to a failing one, and i'd possibly try that before going to the effort of dropping the tank. Quote Link to comment Share on other sites More sharing options...
ajh Posted January 30, 2011 Share Posted January 30, 2011 This is what mine did when the sedimentor was full of red jelly crud so either the fuel lift pump or fuel filter would be my guess. Do you drain your filter every 2 weeks? Quote Link to comment Share on other sites More sharing options...
reads90 Posted January 30, 2011 Share Posted January 30, 2011 blowing it through from the engine end back to tank,which will require more bleeding aftewards, if there is anything in the end of the pipe it will hopefully dislodge or it's a tank out job to make it's all clean & good inside the tank. Should not need bleeding the 200 and 300 tdis are self bleeding engInes Quote Link to comment Share on other sites More sharing options...
western Posted January 30, 2011 Share Posted January 30, 2011 Should not need bleeding the 200 and 300 tdis are self bleeding engInes these only self bleed upto a point, why put excess workload on the lift pump/FIP & Starter, bleeding it fully is much better for all thos components. Quote Link to comment Share on other sites More sharing options...
MaxDef Posted January 30, 2011 Author Share Posted January 30, 2011 I changed my filter last week, and there was no dirt in the bottom. Up to now I had never drained the filter.. As a novice I'm still learning and a bit confused : by bleeding you mean getting al the air out of the fuel system and draining the filter is loosening the little white cap at the bottom of the fuel filter ? I think i'll take up Reb78's advise and first try to change the lift pump first. When I changed the fuel filter last week, I bled the system (air out system), and the lift pump was working (manually atleast, altough I had to push the lever very low to get some pressure) Quote Link to comment Share on other sites More sharing options...
western Posted January 30, 2011 Share Posted January 30, 2011 bleeding = removing excess air Quote Link to comment Share on other sites More sharing options...
MaxDef Posted February 2, 2011 Author Share Posted February 2, 2011 I ordered a new fuel lift pump yesterday. fitting it next week, hoping the problem will be solved !!! Thank you all for your comments ! Max Quote Link to comment Share on other sites More sharing options...
JJB Serenity Posted February 2, 2011 Share Posted February 2, 2011 Do you drain your filter every 2 weeks? Eh? Should I be draining my fuel filter? I've never drained it, didn't realise I had to. How do you drain it? Quote Link to comment Share on other sites More sharing options...
western Posted February 2, 2011 Share Posted February 2, 2011 Eh? Should I be draining my fuel filter? I've never drained it, didn't realise I had to. How do you drain it? on the bottom of the filter is a [normally] white plastic nut with a stub tube moulded in to it, unscrew but don't remove, allow a bit of fuel to drain then retighten, it's meant to let any water out of the filter, I haven't done mine for ages, but it hasn't affected the engines operation at all. Quote Link to comment Share on other sites More sharing options...
JJB Serenity Posted February 2, 2011 Share Posted February 2, 2011 thanks Western! Quote Link to comment Share on other sites More sharing options...
crclifford Posted February 3, 2011 Share Posted February 3, 2011 Just be careful that you don't snap the bleed screw like i did!!! ended up drilling it out and getting a replacement!! The PO obivoulsy hadn't touched it and neither had i in the previous 10 months! Quote Link to comment Share on other sites More sharing options...
MaxDef Posted February 8, 2011 Author Share Posted February 8, 2011 This evening I changed the fuel lift pump and.... problem solved ! He drives again like he should ! Is it normal than you can't fit the heat barrier delivered with the new pump ? There wasn't one installed in the old one, so I didn't fit it (was also impossible as the bolts were too short...) Quote Link to comment Share on other sites More sharing options...
western Posted February 8, 2011 Share Posted February 8, 2011 fit the heat barrier if you mean the black spacer block, it's not required on 200tdi as the lift pump mounting plate on the engine, has the spacer built in. good to read normal service has been restored Quote Link to comment Share on other sites More sharing options...
reb78 Posted February 8, 2011 Share Posted February 8, 2011 This evening I changed the fuel lift pump and.... problem solved ! He drives again like he should ! Is it normal than you can't fit the heat barrier delivered with the new pump ? There wasn't one installed in the old one, so I didn't fit it (was also impossible as the bolts were too short...) Good job! As Ralph says the spacer is not meant for all engines - IIRC its for the early diesels that dont have the spacer block built into the casing. If you had fitted it, the lever on the lift pump wouldnt have engaged the cam it runs on and it would likely have still not run properly. Quote Link to comment Share on other sites More sharing options...
MaxDef Posted February 13, 2011 Author Share Posted February 13, 2011 Well, I cried victory too soon.... Yesterday we took the Def for a 100Km roadbook trip and after a few kilometers he did it again. 1,2,3th gear are Ok, but when I reach 60km/h in 4th gear, the problems appear : strong vibrations, loss off power until I reach 80 km/h then the vibrations disappear, but with changing into 5th it starts again. The strange thing is that he only does it in high gear, when ofroad and in low gear there isn't any problem (even in high rpm) Could it be possible that there is a tiny air-leak somewhere, (fuel line clamps, injectors, other ???) and that is is causing the problem ? I'm clueless ! I hope i'll get him back into shape before I take him for a trip to the UK in March ! Quote Link to comment Share on other sites More sharing options...
JJB Serenity Posted February 13, 2011 Share Posted February 13, 2011 It really sounds like a UJ to me as these are the exact same symptoms I had when I had a UJ go. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted February 13, 2011 Share Posted February 13, 2011 Ditto, sounds like a UJ to me. Quote Link to comment Share on other sites More sharing options...
MaxDef Posted February 13, 2011 Author Share Posted February 13, 2011 Ok, but the it was solved after I had changed the fuel lift pump, and came back after a few days ? Or was this just a coincidence and have I been looking at the wrong place all this time ? In fact this isn't a fuel or engine problem then, but a problem of vibrations due to the broken UJ ? Quote Link to comment Share on other sites More sharing options...
JJB Serenity Posted February 13, 2011 Share Posted February 13, 2011 Only one way to find out, give them a shake and look for play Quote Link to comment Share on other sites More sharing options...
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