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Post by kris on Feb 5, 2024 14:19:48 GMT
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Post by on Feb 5, 2024 15:29:30 GMT
It would be interesting to see what engines are having problems. In the article there is this
"on top of this, modern diesel engines also circulate the fuel through the diesel system to keep components cool and lubricated; the fuel gets heated and cooled during this process and may pass through the system many times before actually being combusted in the engine. This process changes the structure of the diesel and sees an increase in contaminants in it. These modern engine fuel systems have very fine tolerances, and the fine injector nozzles can block up."
So what is a modern engine?
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Post by on Feb 5, 2024 15:34:15 GMT
From one of the links ther is this
"causes of IDID
Meanwhile to meet environmental legislation the engine manufacturers are designing engines with ever higher fuel pressures, presently up to 45,000 psi and some at 60,000 psi with tolerances measured in microns and with exceptionally light pintles in the injectors, these engines demand a high quality fuel or early failures can only be expected.Additionally it is common practice in marine to use the fuel itself as a cooling medium for the injectors"
It does seem it may be a disease of modern Diesel engines with very close tolerances.
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Post by kris on Feb 5, 2024 15:59:12 GMT
Yes I tend to agree although the tolerances in the injectors of old engines are pretty fine as well. I just wondered if any one on here had encounted it? It is quite worrying when they are saying that diesel goes off after 28days? Or I should say starts to deteriorate.
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Post by brummieboy on Feb 5, 2024 16:15:09 GMT
R.C.R. covered this comprehensively about 12 months ago. An acquaintance of mine had a long problem with this culminating in a new injector pump and injectors, and awkward cleaning of all filters and pipework.
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Post by kris on Feb 5, 2024 16:33:18 GMT
So your friend had the problem? What engine was it on?
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Post by on Feb 5, 2024 16:36:07 GMT
It is interesting as my tanks are full of two yar old diesel and in the next few weeks I will be transiting through the pool of London getting away from this terribly shithouse ditch.
I'll probably do a couple of experimental runs along the cut first. I have had engines running no issues and the fuel water separators are clean so should be alright.
A couple of BMC 1.5s which of course are quite old tech.
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Post by on Feb 5, 2024 16:37:14 GMT
Also worth noting that there is promotional material for fuel treatment products also involved in the story.
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Post by kris on Feb 5, 2024 16:53:11 GMT
Also worth noting that there is promotional material for fuel treatment products also involved in the story. This is what I was wondering, if it was a “none”problem. Considering the article is written by some one making money from fixing this problem. I'd not heard of it before, but then I hadn’t heard of diesel bug until I had. With diesel bug though I met lots of boaters that had it personally so I knew it to be true. But I suppose if rcr know about it then it must be a thing?
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Post by on Feb 5, 2024 17:05:06 GMT
I wouldn't touch RCR with a largepole.
Suspect they may not be entirely averse to creating problems which don't exist.
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Post by Aloysius on Feb 5, 2024 17:41:01 GMT
In terms of engines I suspect that, like cars, it's going to be late-production models which are most at risk. Euro 4 was about 2005, euro 5 about 2010, euro 6 about 2015. What it means in practice is more filters, feedback loops etc. I bet this applies at least in part to the sort of diesels that find their way into narrowboats. Canalstars and the like. As is said, the more you overtrick the plumbing the easier it is to stop up the tailpipe.
Maybe there's going to be a bunch of smug Lister owners before very long. 😀
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Post by kris on Feb 5, 2024 17:49:42 GMT
I wouldn't touch RCR with a largepole. Suspect they may not be entirely averse to creating problems which don't exist. I agree but brummieboy seems to think they know all about stick diesel. They seem to have helped that boat sink at barrow upon soar during the recent floods.
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Post by tonyb on Feb 6, 2024 8:01:45 GMT
Some very odd things have been happening with diesel going back maybe 20 years. First bug, then Eberspacher told me that they had found some cases where the use of an emulsifying fuel additive to combat bug seemed to cause a mass of mousse like substance in the tank. Then RCR found cases of a waxy substance coating the filters so the blocked and the fuel pressure/suction distorted the filter material. This was odd because at a casual glance the filter looked a slightly different colour, but otherwise normal. I have a photo of this from RCR. Then we get this sticky diesel thing, although I have not suffered it or come across it.
I get the impression that the bio diesel that is added to the majority of diesel fuel may be an important factor, and the use of a variety of fuel additives in as attempt to combat bug. It also seems water in the fuel plays a part.
I think all a boater can do is to once or twice a year suck from the bottom of the tank to remove whatever has built up or formed there. I used to use a biocide additive at my last refuel of the year (holiday boat).
The self bleeding diesel seem to return more fuel to the tank than non-self bleeders. The non-self bleeding BMC 1.5s only returns the amount of diesel that can fit through a 0.5mm orifice (plus a tiny amount that leaks back through the injectors), whereas self bleeders tend to use orifices of a few mm, maybe more than one.
So, no, I have not come across sticky diesel, but I have been retired for years. I do believe it is probably a thing, but on the majority of canal boat engines is probably not a major problem as long as the tank is kept clear of water build up. It may well be a costly problem for individuals who do suffer it.
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Post by tonyb on Feb 6, 2024 9:48:41 GMT
I also get the impression that longer storage times in boats might be an issue, especially since they added bio.
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Post by kris on Feb 6, 2024 10:06:02 GMT
Thanks for the reply Tonyb. I haven’t encounted it personally, which I would have thought I would have done, if it’s such a big problem as they make out in the article.
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