onecal Posted April 8, 2013 Share Posted April 8, 2013 Hi Tracker Hope this may be of help, I have come across a few with problems similar to yours after trips to Europe with lets say poor fuel,encountered on the way,,,The Exhaust was blocked ,We did all the usual EGR etc. but in fact the exhaust was badly blocked and gave similar power loss , and sounded like a petrol engine pinking under load as you say , around the 1200/2200.RPM range with very poor MPG, High back pressure in the exhaust,Regards,Brendan Link to comment Share on other sites More sharing options...
Tracker Posted April 8, 2013 Author Share Posted April 8, 2013 Brian Kirby - 2013-04-08 1:03 PM Tracker - 2013-04-07 12:04 PM You can always rely on Brian to answer the question that nobody has asked! Just thinking of your driving licence and wallet, sweetie pie! :-) Thank you dearest - I don't know what I would do without you!! Link to comment Share on other sites More sharing options...
Brambles Posted April 8, 2013 Share Posted April 8, 2013 onecal - 2013-04-08 1:29 PMHi Tracker Hope this may be of help, I have come across a few with problems similar to yours after trips to Europe with lets say poor fuel,encountered on the way,,,The Exhaust was blocked ,We did all the usual EGR etc. but in fact the exhaust was badly blocked and gave similar power loss , and sounded like a petrol engine pinking under load as you say , around the 1200/2200.RPM range with very poor MPG, High back pressure in the exhaust,Regards,Brendan Tracker has now remembered where he hid his sink plug! Link to comment Share on other sites More sharing options...
Tracker Posted April 8, 2013 Author Share Posted April 8, 2013 onecal - 2013-04-08 1:29 PMHi Tracker Hope this may be of help, I have come across a few with problems similar to yours after trips to Europe with lets say poor fuel,encountered on the way,,,The Exhaust was blocked ,We did all the usual EGR etc. but in fact the exhaust was badly blocked and gave similar power loss , and sounded like a petrol engine pinking under load as you say , around the 1200/2200.RPM range with very poor MPG, High back pressure in the exhaust,Regards,Brendan Interesting thought Brendan?How did you come to find out the exhaust was blocked can I ask please, where was the blockage and what did you have to remove and clean to identify and resolve it?I would be amazed if after just 17k miles this were the case especially as it didn't pink at all for the miles between 10k and 14k - although the economy has always been poor? Link to comment Share on other sites More sharing options...
Brambles Posted April 8, 2013 Share Posted April 8, 2013 Has your exhaust pipe been alterered at all, say to make it longer and extend the pipe further back. If this is not done correctly and the pipe tuning is wrong it can affect ecomomy drastically. Generally extensions after the main box do not matter, but before it can have a large affect if not done to the correct standing wave length ratio. Link to comment Share on other sites More sharing options...
Tracker Posted April 8, 2013 Author Share Posted April 8, 2013 Brambles - 2013-04-08 5:05 PM Has your exhaust pipe been altered at all, say to make it longer and extend the pipe further back. If this is not done correctly and the pipe tuning is wrong it can affect economy drastically. Generally extensions after the main box do not matter, but before it can have a large affect if not done to the correct standing wave length ratio. It all looks original to me with no joins where there shouldn't be a join, all very similar to other vans including the chromed tail pipe extension to clear the bodywork. Link to comment Share on other sites More sharing options...
Guest 1footinthegrave Posted April 8, 2013 Share Posted April 8, 2013 Tracker - 2013-04-08 2:28 PM Brian Kirby - 2013-04-08 1:03 PM Tracker - 2013-04-07 12:04 PM You can always rely on Brian to answer the question that nobody has asked! Just thinking of your driving licence and wallet, sweetie pie! :-) Thank you dearest - I don't know what I would do without you!! No, nor me, I've been printing off all of his advice and thoughts, so far it's shaping up to be bigger than the Encyclopedia Britannica :D :D Link to comment Share on other sites More sharing options...
onecal Posted April 8, 2013 Share Posted April 8, 2013 I have come across this often in cleaning out the complete engine head , inlet manifold, EGR,turbo etc ,,,,Yes muck ,in fact a tarry substance ,and happens quite often when high % biofuel is used . Lack of use (as in low mileage Motorhomes does not help) Inspect your inlet manifold and see if it is covered in a tarry substance ,If it is ,the exhaust system may be also blocked up . Regards Brendan Link to comment Share on other sites More sharing options...
Brambles Posted April 8, 2013 Share Posted April 8, 2013 onecal. Are you talking about bio fuel as in raw veggie oil or processed oil into esters. Decent Biodiesel actually burns cleaner than mineral diesel. I run very high levels (B50) of biodiesel and exhaust runs very much cleaner with lower levels of soot and no build up of residues so find it hard to believe it is building up in the EGR valve. Naturally I stand to be corrected on this if it is a problem and accept biodiesel in europe can leave a lot to be desired. Link to comment Share on other sites More sharing options...
Brambles Posted April 8, 2013 Share Posted April 8, 2013 "No, nor me, I've been printing off all of his advice and thoughts, so far it's shaping up to be bigger than the Encyclopedia Britannica " The Life of Brian Vol1. On sale now! (Copyright MMM) available from all good newsagents Link to comment Share on other sites More sharing options...
onecal Posted April 8, 2013 Share Posted April 8, 2013 I wish all that to be correct ,,,but I am afraid with EGR's failing I have had to do quite a few that have come to me rather badly blocked up ,,,with poor biofuel not helping the cause ,,( as would poor diesel) with blocked up internals, lack of power and very poor fuel economy as a result. I am not knocking good biofuel,by the wayThis does happen quite a lot in motorhome circles ,,,,maybe one contribute is not a lot of use ,Regards,Brendan Link to comment Share on other sites More sharing options...
Brambles Posted April 9, 2013 Share Posted April 9, 2013 I shall maybe whip of my EGR valve off and take a look when I have time and see what state it is in just to make sure there is no build up. Link to comment Share on other sites More sharing options...
onecal Posted April 9, 2013 Share Posted April 9, 2013 Hi,If you are running on a good fuel be it biofuel or diesel you should have no problems , but if not I am afraid it may be a different story,with quite a blocked up motor.Regards.Brendan Link to comment Share on other sites More sharing options...
flicka Posted April 9, 2013 Share Posted April 9, 2013 onecal - 2013-04-08 11:25 PM I wish all that to be correct ,,,but I am afraid with EGR's failing I have had to do quite a few that have come to me rather badly blocked up ,,,with poor biofuel not helping the cause ,,( as would poor diesel) with blocked up internals, lack of power and very poor fuel economy as a result. I am not knocking good biofuel,by the wayThis does happen quite a lot in motorhome circles ,,,,maybe one contribute is not a lot of use ,Regards,Brendan I tend to agree with onecal, (see my previous post) As Motorhomes due stand idle more often than any other form of Diesel Transport, there IS the possibility of the Bio element dropping out of solution & sticking to any metal surface. Similar to when we used Castrol R in racing engines, which had to be stripped down & cleaned after each race meeting. (getting nostalgic for that "R" smell, but not the stripping & cleaning) ;-) ;-) Link to comment Share on other sites More sharing options...
flicka Posted April 9, 2013 Share Posted April 9, 2013 onecal - 2013-04-08 11:25 PM I wish all that to be correct ,,,but I am afraid with EGR's failing I have had to do quite a few that have come to me rather badly blocked up ,,,with poor biofuel not helping the cause ,,( as would poor diesel) with blocked up internals, lack of power and very poor fuel economy as a result. I am not knocking good biofuel,by the wayThis does happen quite a lot in motorhome circles ,,,,maybe one contribute is not a lot of use ,Regards,Brendan I tend to agree with onecal, (see my previous post) As Motorhomes do stand idle more often than any other form of Diesel Transport, there IS the possibility of the Bio element dropping out of solution & sticking to any metal surface. Similar to when we used Castrol R in racing engines, which had to be stripped down & cleaned after each race meeting. (getting nostalgic for that "R" smell, but not the stripping & cleaning) ;-) ;-) Link to comment Share on other sites More sharing options...
Tracker Posted February 22, 2018 Author Share Posted February 22, 2018 This is the thread that Ben refers to. Millers diesel additive made no difference whatsoever over some 500 miles of use I never did get to the bottom of it and we sold the van before I had the chance to bugger about looking and fiddling with various bits. Link to comment Share on other sites More sharing options...
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