CURLY Posted July 28, 2009 Share Posted July 28, 2009 i have a 2.5td 110 and i get quite a bit of blue smoke from the exhaust when i take my foot off the throttle when i'm giving it some wellie. either hot or cold. but as far as i can see, it runs pretty clear if i keep the throttle down.. EG: when i'm driving down a dual carriageway in say 3rd at quite high revs, and i lift off the accelerator.. just wondered what it could be? any ideas? CURLY Quote Link to comment Share on other sites More sharing options...
markyboy Posted July 28, 2009 Share Posted July 28, 2009 i have a 2.5td 110 and i get quite a bit of blue smoke from the exhaust when i take my foot off the throttle when i'm giving it some wellie. either hot or cold. but as far as i can see, it runs pretty clear if i keep the throttle down..EG: when i'm driving down a dual carriageway in say 3rd at quite high revs, and i lift off the accelerator.. just wondered what it could be? any ideas? CURLY That's normally the symptoms associated with worn valve stem seals. Do you get a puff of blue smoke on start up too? Although it could be masked as I think most TD's smoke when the engine is cold anyway. Mark. Quote Link to comment Share on other sites More sharing options...
CURLY Posted July 28, 2009 Author Share Posted July 28, 2009 That's normally the symptoms associated with worn valve stem seals. Do you get a puff of blue smoke on start up too? Although it could be masked as I think most TD's smoke when the engine is cold anyway.Mark. a puff??? he he i get a smoke screen, but like you say, its masked by the black and white smoke. i thought it might be the valve stem seals.. spose its a head off job to change them too isn't it? could it be the piston rings? CURLY Quote Link to comment Share on other sites More sharing options...
markyboy Posted July 28, 2009 Share Posted July 28, 2009 a puff??? he he i get a smoke screen, but like you say, its masked by the black and white smoke.i thought it might be the valve stem seals.. spose its a head off job to change them too isn't it? could it be the piston rings? CURLY No pun intended, I think it is a head off job, someone else may be able to confirm that. If the rings were worn you should get blue smoke all the time, or an engine that "breathes" a lot. With the older Land Rover engines, in extreme cases, this led to the engine running on it's own engine oil and it wouldn't switch off. A local diesel injection specialist used to call it the Land Rover 5th injector Try taking the oil filler cap off with the engine running, if there's a loud "whumph" noise and lots of blue smoke you could be looking at worn rings. Does the engine consume much oil, or are the leaks that bad that it's difficult to say? HTH, Mark. Quote Link to comment Share on other sites More sharing options...
CURLY Posted July 28, 2009 Author Share Posted July 28, 2009 LOL! if i take the oil filler off with it running, it lets some whitey smoke out but no blue smoke. but only when warm. it used quite alot of oil, but the trip to work is only a few miles, (i know i should walk..) and it only just starts to run clean, IE no blue smoke by then. i bought it with the intention of fitting a 200 tdi into it, but money is to tight for that at the moment! checked the water by the way, and its clean and fresh, so dont think the head gasket has gone. CURLY Quote Link to comment Share on other sites More sharing options...
markyboy Posted July 28, 2009 Share Posted July 28, 2009 LOL!if i take the oil filler off with it running, it lets some whitey smoke out but no blue smoke. but only when warm. it used quite alot of oil, but the trip to work is only a few miles, (i know i should walk..) and it only just starts to run clean, IE no blue smoke by then. i bought it with the intention of fitting a 200 tdi into it, but money is to tight for that at the moment! checked the water by the way, and its clean and fresh, so dont think the head gasket has gone. CURLY I'd go for the valve seals. Could just do with Les or Ralph confirming it's a head off job. I think it must be as the valve springs need to come off and you need to stop the valve dropping, unless there's a way of doing it with the piston stopping the valve dropping. I've never done one so I can't say. I'd assume the "white smoke" is steam/water vapour. Short journeys tend to create a lot of condensation as the engine doesn't get hot enough to evaporate it fully. Mark. Quote Link to comment Share on other sites More sharing options...
alfredenewman Posted July 28, 2009 Share Posted July 28, 2009 on petrol engines we used to do them with the head on by taking a plug out and putting a lenght of nylon string down the plug hole then winding the engine up to tdc where the string compresses against the valvethen using a lever type valve spring compresor remove collet and spring slip a new stem seal on and replace spring and collet .it did not take long i dont know how much clearance you have between your valve and piston if its not alot you might get away withremoving cam and just tdcing the relevent piston good luck its worth a shot Quote Link to comment Share on other sites More sharing options...
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