johny75

Hey guys:
I want to use the diesel purge injector cleaner, which requires you to disconnect the line from the fuel filter, the one that feeds the injector rails, and run it off the cleaner. Does anyone know which line feeds the rails? I tried to trace them but I am uncertain as they bend around and hide from plain site, so I want to be 100% sure. Thanks in advance.

cm60k

Do you mean, you want to use injector cleaner, to clean-up you injectors..??

ZAYED,,

johny75

Yes, that is why I am tracing the hose that comes out of the fuel filter and feeds the rails. I am not using the "dump in the gas tank" method. Thanks

alx

You are asking for a lot of injector trouble down the road. My advise is do not attempt to clean injectors as you intent to do.

What are your symptoms?

johny75

My car 100k and as a prventitive maint i plan to run one can of the "liqui moly diesel purge" which is designed to be used the way i described it. Car runs ok now but i am sure some deposits are present. Is preventive maint on the fuel injectors not a good idea? Thx

alx

If you have no symptoms I would suggest you leave the injectors and the high pressure pump alone. if you want to clean up/ unclog something- remove and clean the intake manifold. While at it replace oil cooler seals.

johny75

So are there any issues cleaning injectors?? '.. if anything i hear the solitions dont work vs breaking anything. .. so if you know which hose on the fuel filter is which pls share . Thx

cm60k

What's the disadvantage with tank method..!!?!!,

MB provides original cleaner that recommended it, it's special formula liquid for injector/lines/hoses/tank cleaning,,

i using it since almost 10 years, without opening any lines or hoses..!!



ZAYED,,

johny75

Well, I am not sure about the MB recommended cleaner, but just in my own opinion, based on many test published on the web, the dump in the tank method with most commercial products is a "smoke", The one I will try may be a "smoke" too , it just want to try it, at least it sounds better on paper, as the solution is run 100% concentrated through the injectors, vs being diluted in the fuel tank (approx ratio 1:200). Thanks for sharing the one you are using, I assume I can just call the dealer and purchase it from there, right? What is the name?, Thx

cm60k

Yeah sure, you can get it from the dealer,,

part #: "000 989 25 45/12"..

ZAYED,,

johny75

Are you sure this p/n is for diesel engines, a quick google search showed that it is for gasoline engines. Thx

cm60k

Ahhh, sorry John, i didn't know you have Diesel, this additive for Petrol, not soo sure if it capable with Diesel's..?!?,

Diesel is more sensitive than Petrol, if you don't have any issue with your injectors, i suggest to change the filter only..

ZAYED,,

johny75

No prob Zayed! and yes my filter was recently changed.

samiran

Short story, don't do it.

I actually think the product (liquimoly) would be/is okay for the injectors, but the architecture of the fuel supply system prevents it from being used in the way you want.

There is a low pressure diesel pump from the diesel tank to the fuel filter. This will continue to pump fuel into the engine cavity once you've removed the line from the fuel filter.

You could, potentially, try and divert that flow somewhere, and try and pump the diesel into a milk bottle or something, but this sounds like a recipe for disaster to me; and probably something that will trip about a dozen codes.

This is different from most VWs, where it is possible to put the liquimoly diesel purge can in place of the fuel filter.

My recommendation? It isn't good for your warranty, but you can run either the liquimoly product, or something similar (I've heard very good things about Powerservice Diesel Additive (grey bottle)) to your fuel on a regular/semi-regular basis.

The MB dealers by me seem to be okay with the Powerservice Product, they recommend people use it on their Sprinters. You could also run a "premium" diesel, which tends to run Powerservice, or a similar additive, in the diesel (generally mixed at the pump, believe it or not!).

The other thing some of the MB dealers do is recommend a BG-style cleaning. This should help remove some of the gunk from the intakes, injectors, etc. . . . (Info here: https://www.bgprod.com/services/diesel-induction/)

There are some positive reviews of that service on the Sprinter Source forum, with the same engine. One of the dealers semi-close to me offers that service, and I'm thinking of heading there because I'm fairly certain my intakes are pretty coked up with carbon. Should cost between $300-$600, from what I know.

If you really want to do one of these cleanings, (not just preventive, but to treat an issue), it makes a lot of sense to do it at a major shop, or at a dealer; so if they somehow blow-up the engine, it'll be their responsibility. If you do it at home, and damage an injector, or cause a run-away condition, or whatever, the blown engine will be solely on you.

johny75

Samiran.,this is very good info. I have to now think about it...Thx!... maybe i can empty the fuel filter and fill it with the cleaner.a?.,.. that may be too much work...

bha

With my older diesels (300SD, 300SDL) the rule was that you filled the new filter up with diesel otherwise you would have to crank and crank and crank for a while before the engine would start after your filter change.


I used to take a can of diesel purge and fill up the filter before installing it. You could get almost half a can into one filter.


Of course this was a 'spin on' style filter (like an oil filter) where it was easy to pour diesel purge in. But I'm sure you could get it into the W164 filter no problem (maybe with a funnel)


I have a can of Diesel Purge around and may try it on my next filter change on the GL.


On the older diesels it helped A LOT so I think running it straight from a brand new filter is an excellent idea.