jeffchef Posted February 4, 2009 Share Posted February 4, 2009 Hi folks Brain picking time again-it has been suggested to me that I put Wynns [there are other brands out there!!] fuel additive into my Merc Sprinter [born nov 26th 2000 ] sprintshift,it has done over 270000ks. The product says it is for `common rail` engines. what is a commonrail- have i got one- and would the `readers` use it themselves. Many thanks, again!!! Jeff Link to comment Share on other sites More sharing options...
Patricia Posted February 4, 2009 Share Posted February 4, 2009 Can't help with the common rail question but hey that is really some mileage! Did you mean to put 4 zeros? Link to comment Share on other sites More sharing options...
colinfrier Posted February 4, 2009 Share Posted February 4, 2009 Hi Don't know if yours is common rail a relativley recent thing. A pump presurises a tube (rail)l along side tha injectors each injector has an electronicley controlled valve which in turn is controlled by a computer this system allows changes to times ammounts etc of fuel injected into the cylinder so makes remapping possible just by changing the computer settings. Link to comment Share on other sites More sharing options...
dikyenfo Posted February 4, 2009 Share Posted February 4, 2009 Modern diesels use a separate accumulator pumped up to high pressure and the comp. tells the system how much juice to allow through as demanded by the operating strictures. The injectors as well as the pump are more sophisticated than the old type and because our mixture of diesel does not lubricate as well as it used to these items wear out and distribute material into these parts which causes the system comp to register a major fault and the system shuts down and won't start until new items are installed. To ensure that sufficient lubrication is available the commercial vehicles use an additive from www.uniteddiesel.co.uk and bung a small amount when filling the tank. There are other spin-off advantages such as burning off water into the cyls. by enabling the breakdown of the water to a level that will pass into and through the injectors;normally it totally blocks the system. I have used this since buying my motorhome as my Iveco failed with this problem and new injectors and pump cost 2000 gbp --nasty. There are little bottles and you can buy them from Halfords but buying in 5 litres is way cheaper and the firm sends through the post. Link to comment Share on other sites More sharing options...
flicka Posted February 4, 2009 Share Posted February 4, 2009 jeffchef - 2009-02-04 12:37 PM Hi folks Brain picking time again-it has been suggested to me that I put Wynns [there are other brands out there!!] fuel additive into my Merc Sprinter [born nov 26th 2000 ] sprintshift,it has done over 270000ks. The product says it is for `common rail` engines. what is a commonrail- have i got one- and would the `readers` use it themselves. Many thanks, again!!! Jeff Jeff I'll assume you mean your Merc has done 27thousand km's Why do people want to put additives in their fuel. ? Modern engines are designers collaborate with the Fuel manufacturers and the standard additives put in during the refining process or injected at tanker loading point. If you want a premium diesel, each of the fuel manufacturers market one. (The premium additives in these fuels are not normally available in other outlets fuels i.e. supermarket) The aftermarket additives you are talking about are rarely formulated in conjunction with the Engine manufacturer and could invalidate the vehicle's warranty. Link to comment Share on other sites More sharing options...
Clive Posted February 4, 2009 Share Posted February 4, 2009 Simple answer DO NOT DO IT. Just use the Merc recommended lubricants and change periods. P.S. Was that 27 thousand or 270 thousand? C. Link to comment Share on other sites More sharing options...
jeffchef Posted February 5, 2009 Author Share Posted February 5, 2009 Again, Thanks for the advice- I thought that but wanted confirmation- and many thanks -I got it. the mileage is correct- it was `born` in germany as just a `bare` chassis- shipped to NZ- converted- used in NZ from July 01 to dec 02 then shipped to Oz -did a bit [typical british understatement!!!] in the land of the convict- shipped to uk in june 08 Brill machine!-[but didnt like the cold in spain/france in dec/jan!!!] thanks again Jeff Link to comment Share on other sites More sharing options...
fred22 Posted February 5, 2009 Share Posted February 5, 2009 When my Ford Escort TB failed the MOT on exhaust emissions, my garage put an injector cleaner into the tank and, after running for a few miles, it passed with flying colours. I add a measure to a tank full every now and then and have had no trouble since. Link to comment Share on other sites More sharing options...
dethleff Posted February 5, 2009 Share Posted February 5, 2009 So do I occasionally. Link to comment Share on other sites More sharing options...
Slim Posted February 5, 2009 Share Posted February 5, 2009 We have an X250 Peugeot 120. Filled up in Central France last October at a Supermarket. Noticed a big increase in clatter from the engine on acceleration. I purchased some French additive - no difference. Filled up again at Auchen in Calais and the clatter was still as bad even with the additive. Filled up at our local BP garage last week - NO additive, after about 5 miles running, the clatter had gone and back to its normal quiet running. Moral, Just buy good branded diesel? Has anyone else noticed this? Comments please. Bob Link to comment Share on other sites More sharing options...
Clive Posted February 5, 2009 Share Posted February 5, 2009 Its also worth giving them a good thrash occasionally to blow out the cobwebs, get the combustion chambers up to temperature and release any trapped carbon deposits. White van man does this every day! C. Link to comment Share on other sites More sharing options...
euroserv Posted February 5, 2009 Share Posted February 5, 2009 Hello, To answer your question regarding whether you have a common rail or not, the age would suggest probably yes, but there are ways to tell: 1. If you look at the badge on the front grille or on your documents it will either say something like 309D or 310D or 312D if it is not common rail. If it is common rail it will say something like 311CDi, 313CDi or..... well I am sure you get the gist. 2. If you have a look at the top of the engine you should be able to identify the injectors. They will all have fuel pipes going to them but on the common rail vehicles all of them also have electrical connectors with three wires on each. On the old type engines only one injector has a wire going to it. On the subject of additives we have found that even the highly advanced common rail engines can have issues with sticking fuel pressure regulators and other devices. We use a tin of Wurth common rail injector cleaner once a year on our own vehicles and no longer have any problems. There are undoubtedly other products out there but they are generally less effective than the sort we can get for the workshop. I can only recommend Wurth and Liqui-Moly and I suspect that Wynns should be ok too. I should add that if your vehicle has covered that kind of mileage and has not needed any attention to the injectors, boost pressure regulator or high pressure fuel pump I would leave it well alone and count your blessings! Nick Link to comment Share on other sites More sharing options...
Den Posted February 5, 2009 Share Posted February 5, 2009 White van man is being passed on motorways now by gold and silver van man and Mh's being delivered to shows by the salesmen. Link to comment Share on other sites More sharing options...
Paul- Posted February 6, 2009 Share Posted February 6, 2009 Just get a tank full (or 2) of BP ultimate, Shell V-power diesel or Total excellium, I'm don't like the idea of using injector cleaner on high pressure injectors unless you dealer will confirm that its ok Paul Link to comment Share on other sites More sharing options...
jeffchef Posted February 7, 2009 Author Share Posted February 7, 2009 thanks folks for all the help and info- as ahs been suggested i will leave well alone and just ahve the regular serviceing and use `premium` fuel Cheers again to all who offer advice and help willingly. Jeff Link to comment Share on other sites More sharing options...
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