Missed oil changes

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bigbill00
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Re: Missed oil changes

Post by bigbill00 »

the service on these engines is nowhere near 30k
they blame the dpf missed oil changes and lack of regeneration of the dpf
for feeding carbonated oil back into the engine and into the turbo causing the problems
The car i have now had an engine change around 50k for the oil starvation issue previous owners
As suggested i would carry out the post install procedure plus will give you an idea if you are likely to encounter any other issues
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Post by Eddie Nuff »

First job would be to pull the air feed pipe off the turbo and see what state the balance shaft is in. If that's ok sump off and new strainer, turbo oil feed pipe and return pipe off and soaked in diesel for a couple of days, new oil filter and cheap 5/30 oil in it for 100 miles, drain it out, new oil filter and decent non-sulphur oil. Change oil again in 3000 miles.

Would probably remove the egr and soak that in diesel for a couple of days as well
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Re: Missed oil changes

Post by demag »

There's no doubt this engine was a design disaster. A main dealer had two goes at fixing my Berlingo in less than 2k miles and failed miserably. Yes I know you can do a, b, c and d etc. to keep out of trouble but let's face it you shouldn't have to. As is well documented other diesels run to hundreds of thousands of miles on basic maintenance.
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Re: Missed oil changes

Post by dave »

Been out today in the wet & purchased 8 ltrs of the finest Fully Synthetic Motor Oil *

Returned home & ordered the oil filter & sump plug for 6.83 inc vat & carriage (CP4L)







* well Carlube Triple R from B&M £5 for 4ltr, its looks good enough to do a couple of short oil changes with, I'm looking forward to seeing how bad the old stuff looks + the contrast to the 2nd change (I know the oil will go black as soon as its running)
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Re: Missed oil changes

Post by GiveMeABreak »

bigbill00 wrote: 04 Mar 2018, 11:18 the service on these engines is nowhere near 30k
they blame the dpf missed oil changes and lack of regeneration of the dpf
for feeding carbonated oil back into the engine and into the turbo causing the problems
The car i have now had an engine change around 50k for the oil starvation issue previous owners
As suggested i would carry out the post install procedure plus will give you an idea if you are likely to encounter any other issues
I can't see how DPF regeneration has got anything to do with it - and that certainly would not account for those same engines with the same problems that do not have particulate filters fitted!
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Re: Missed oil changes

Post by RichardW »

The issue with this engine appears to be the injectors coming loose. Since they are in the centre of the combustion chamber they are sunk in a tube through the rocker cover. When they come loose you get soot blowby into the rocker cover which then finds its way into the sump. There is a very small and fine filter in the turbo oil feed banjo, and this is the first thing that gets blocked when the oil gets a bit mucky, and the turbo doesn't last too well with restricted oil supply. If the filter is refitted when the turbo is refitted, and nothing else is done, the turbo will last a few 00 miles at best. If the sump is cleaned out, but the filter left in to the turbo the turbo will last 2-3k. However, if you remove the turbo filter and the sump filter, and make sure all the injectors are sealed, then it should be OK. Our C4 ran its turbo at 69k. I refitted without the turbo oil feed filter, but we ran out of oil pressure after about 7k. Cleaned the oil pickup, and we ran out of oil pressure again after about 7k miles. Ripped the strainer out the second time, and it has been OK since (added another 25k with no oil pick up strainer).
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Re: Missed oil changes

Post by wurlycorner »

Will be interested to see how this one turns out for you Dave.
Any chance of some pics of the oil at each change and anything else you can see inside the engine?
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Re: Missed oil changes

Post by MikeT »

I did pretty much the same with my 1.6hdi when I bought it (69000miles), Dave. The engine was somewhat tappy on cold starts too.

The first oil change stank like no other I'd changed before. Maybe it's just a symptom of a DPF engine requiring specialist oil but I've not detected the same smells since.
I suspect the given last couple of years "service history" (by a car supermarket) was falsified anyway.

I used a can of Total Quartz 7000 I had in stock as an interim first change and renewed all filters while I saved my pennies for the more expensive recommended Total INEO ECS. That oil/filter change alone quietened the cold starts noticeably but not completely.

After ~1000miles I drained again and refilled with the proper stuff and have repeated this again after 5000 miles including a bottle of Forte Oil Flush. The cold-start noise is now history and I keep the oil change intervals far shorter than recommended.

I did look for signs of sludge but found none as from what I've read about these small-sumped, efficient engines, they won't tolerate it, so suspect I've dodged that bullet and intend to keep it that way by observing meticulous oil hygene.
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Re: Missed oil changes

Post by white exec »

If oil capacity is say half that of a normal engine, then oil change interval should be about half - assuming the contamination rate is about the same, which it probably is . . . notwithstanding in this case, catastrophically more!

Rather alarming to have to remove engine and turbo filters, in an attempt to boost oil pressure/flow. Is there no permanent solution to the loose injector problem?
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Re: Missed oil changes

Post by dave »

done,

oil filter starting to break down,
oil felt "gritty"
engine now idles quieter

I manged to get more oil on the floor than in the container
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Re: Missed oil changes

Post by Gibbo2286 »

dave wrote: 13 Mar 2018, 13:46 done,

oil filter starting to break down,
oil felt "gritty"
engine now idles quieter

I manged to get more oil on the floor than in the container


One of my customers was an overhead crane engineer, he told us that he was sitting on a girder thirty feet up, scratching his head thinking "Now is it that plug or the other" then having to sit as forty gallons of hydraulic oil poured over his head when he took out the wrong one. :)
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Re: Missed oil changes

Post by Bick »

dave wrote: 13 Mar 2018, 13:46 done,

oil filter starting to break down,
oil felt "gritty"
engine now idles quieter

I manged to get more oil on the floor than in the container


Okay now best drive for a few days and do it all over again - trust me its the right thing to do with your service history :shock:
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Re: Missed oil changes

Post by ekjdm14 »

white exec wrote: 04 Mar 2018, 16:31
Rather alarming to have to remove engine and turbo filters, in an attempt to boost oil pressure/flow. Is there no permanent solution to the loose injector problem?


it's not the actual filter one removes, but the fine mesh/gauze strainers that have proven in service to be too fine... In reality they're not really needed anyway, I can't ever recall seeing/hearing of a strainer in a turbo oil feed before & earlier turbocharged engines don't eat turbos so there can't have been a huge benefit in adding one on the DV6... And in fact it's turned out that the turbo is eventually being killed off by the very thing that was intended to protect it!

(obviously in an ideal world a coarse strainer over the oil pump pickup would be refitted in place of the original, but in the case of these engines even having no strainer seems to be better than having a restrictive one)
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