marx Posted June 20, 2013 Share Posted June 20, 2013 I have a problem with lack of power at about 2500rpm. I''ve checked hoses, fuel lines and wastegate actuator and they seem ok. Also the fuel filter is one year old and has been checked. Steady acceleration there's no problem, but give it a bootfull there's dark grey/black smoke and feels like I'm going backwards. Any ideas, cheers Quote Link to comment Share on other sites More sharing options...
BogMonster Posted June 20, 2013 Share Posted June 20, 2013 Air filter blocked or the rubber elbow coming off the turbo is collapsing internally would be the first two things I would check. If it has EGR, its worth checking that out or better still getting rid of it. Quote Link to comment Share on other sites More sharing options...
mat wilson Posted June 20, 2013 Share Posted June 20, 2013 basically diesels make this real easy excessive smoke means not enough air but no smoke and no power mean no fuel knowing that you can assume (dangerous i know) that its getting all the fuel it needs it just not getting the air that it needs have you got a boost gauge fitted if so where is its feed taken from and whats it reading can you hear any boost leaks when the engine is reved hard in neutral wooshing noise etc could be your turbo has had it so whip of the inlet to the turbo and check for damage and excessive play start there and see where it takes you mat Quote Link to comment Share on other sites More sharing options...
marx Posted June 20, 2013 Author Share Posted June 20, 2013 Thanks guys, must be the air filter. Turbo sounds sweet when revved up.EGR was removed years ago. Will check tomorrow. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted June 21, 2013 Share Posted June 21, 2013 Maybe the hoses delaminating then - the turbo boost will be there, just not getting as far as the engine! Quote Link to comment Share on other sites More sharing options...
simonr Posted June 21, 2013 Share Posted June 21, 2013 Hose collapsing would be my bet! - though this is usually a symptom of the air filter being blocked. As Steve says, it could be the inlet hose de-laminating - so the outside of the hose stays the same shape but the inside collapses and blocks the input. Try disconnecting the inlet hose at the turbo and see if the problem still occurs. If not, replace filter and possibly the hose. Si Quote Link to comment Share on other sites More sharing options...
Snagger Posted June 21, 2013 Share Posted June 21, 2013 basically diesels make this real easy excessive smoke means not enough air but no smoke and no power mean no fuel knowing that you can assume (dangerous i know) that its getting all the fuel it needs it just not getting the air that it needs have you got a boost gauge fitted if so where is its feed taken from and whats it reading can you hear any boost leaks when the engine is reved hard in neutral wooshing noise etc could be your turbo has had it so whip of the inlet to the turbo and check for damage and excessive play start there and see where it takes you mat Sometimes things can be a little more confused - my Tdi has a new injector pump (was fitted to a Wolf engine which was immediately cast) and had never worked. I sent it for re-timing, having worked out the timing was off, making it impossible to work on the vehicle. It runs ok now, except that another manufacturing fault means that the boost diaphragm doesn't respond to the turbo - give it full welly and the turbo spins up, but there is absolutely no smoke and acceleration is sluggish. Anyway, in this instance, the smoke is a give away that either the engine is not getting enough air or the timing is off (too advanced if it's the fuel pump timing, cam timing could be out a tooth in either direction). Quote Link to comment Share on other sites More sharing options...
marx Posted June 21, 2013 Author Share Posted June 21, 2013 Thanks for your comments. Took the induction air filter off and put the original back on, happy days ,it pulls like a train! It's now back to being the best 4x4xfar. Is it possible to clean the induction filter efficiently? Quote Link to comment Share on other sites More sharing options...
BogMonster Posted June 21, 2013 Share Posted June 21, 2013 Do you mean some sort of aftermarket air filter or you just changed the element? You can't clean the standard paper air filter element, you can blow it out using a compressor but it wrecks it, so if it's one of those you need to get a new one. The standard element is p/no ESR1445, its a flat paper element like this http://www.lrseries.com/shop/product/listing/5700/104/94/ESR1445-AIR-FILTER-300-TDi.html If it is something else then it might be washable, depends what it is, K&N etc are washable I think, but best placed in the bin anyway according to some folks Quote Link to comment Share on other sites More sharing options...
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