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#1
05-07-2009, 03:54 AM
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Ding in precamber ball, 617
On my #6 pre chamber, there is a shallow ding about the size of a bb on the ball. There is a definite nailing sound coming from this cylinder along with a slight lope, that goes away when the injector is loosened. I am guessing the ding possibly happened when the glowplug (Since replaced) dropped a piece of its tip. Is a tiny ding enough to cause the cylinder to nail? I poked the ding with a piece of wire and it felt pretty rough. I know the pre chamber ball is supposed to have a smooth surface to help atomize the fuel right?
I would appreciate any input. Thanks Rory
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 1979 240D with a 617 turbo diesel. 
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#2
05-07-2009, 09:21 AM
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A ding in the ball is not going to cause nailing in the cylinder. You'd get a bit concerned if the entire ball has fallen into the bottom of the prechamber..................
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#3
05-07-2009, 10:54 AM
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I agree, a ding on the ball shouldn't be a problem, but whatever caused that ding may have also damaged the injector nozzle. Have it checked for spray pattern. If the injector's been damaged that could easily cause your problem.
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82 300SD 202K 82 300SD 233K 83 300TD 340K 82 300TD 98k euro (parts on the hoof) 85 300TD 282K 83 300TD 197K
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#4
05-07-2009, 12:36 PM
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I think the root of the problem is that you have 6 prechambers in a 617
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For Sale: 1982 MB 300TD 1995 Chevrolet Suburban 6.5TD Sold: 1980 IH Scout Traveler- Nissan SD33T Diesel
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#5
05-07-2009, 12:42 PM
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Quote:
 I thought he was talking about a 603.
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DJ 84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012 
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#6
05-07-2009, 02:35 PM
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hahaha oops! I guess working on my slant six is getting to my head
. I suspected that the injector was bad and swapped it out with a good one and it changed nothing. I also did the delivery valve copper washer and it too changed nothing. Is it possible that a piece of broken glowplug could be clogging one of the holes in the prechamber? This is all happening on the #5 cylinder.
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1979 240D with a 617 turbo diesel.
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#7
05-07-2009, 08:40 PM
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Removing the PC is actually very easy once you have the GP and injector out and you have the tools to do it.
__________________
DJ 84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012
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