Citroen C4 Hatchback 1.6 HDi SX Reviews | Family Cars | Review Centre

26 Aug 2014 | Author: | Comments Off on Citroen C4 Hatchback 1.6 HDi SX Reviews | Family Cars | Review Centre
Citroen C4

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“Dont buy one of these cars infact the whole psa 1.6. ”

Written on: 26/07/2011 by angeldodd (1 review written)

Guest’s Response to angeldodd’s Review

Andoo’s Response to angeldodd’s Review

Written on: 09/10/2013

I can only suggest someone isn’t doing their job properly! I mean, the (correct) oil MUST be changed at or preferably before the service interval.

Another sure fire way of self destruct on these cars is over filling the oil. In the old days, the dipstick tube ended at the bottom of the block so the stick was free to dip the level without any real problem. Now, the dipstick tube goes well into the sump.

The result is no blowback, but to dip the oil you must pull the stick, wipe it, dip it and pull it again. If the level is even a few mm over the mark the engines fate is sealed.

Citroen C4

Another thing with hdi tdi, dti, etc in fact ANY turbo charged engine is the need to allow the turbo to spool down after a hard run. If you live at the top of a hill, let the engine idle for, at the very least, 30 seconds, but rather a full minute. The reason is the turbo runs hot, very hot. So if you rev it then switch off, the turbo will be spinning at high rpm (they can reach 80,000rpm at full boost!!) and it needs oil to lubricate and cool it.

Once the engine is off, the oil is no longer flowing so the turbo is spinning on a tiny bit of oil that is getting hotter hotter. This has the effect of creating carbon build up. Once this starts, the bearing of oil gets smaller until the turbo cannot be lubricated with any real efficiency. I am trying to explain it in simple terms.

It is a lot more complicated, but suffice to say, the turbo tends to go bang!

So, to sum up. Extended oil services are bad. They kill engines. I see it all the time. Oil galleries have got smaller as engines get more compact.

The result is more heat is generated and the likely hood that as oil changes are skipped, the carbon build up is like narrowing of arteries. Eventually something gives.

I had a Picasso 2.0 HDi with 200,000 + miles on it. It started well, drove well and never used oil. The reason being I changed the oil every 8000 miles always allowed the turbo to spool down.

I had a 2002 Renault Laguna 1.9 DCi, 178,000 miles on original turbo. Again, regular oil changes and allow the turbo to spool down.

Do you see a pattern?

I hope this is of some use to someone.

Citroen C4
Citroen C4
Citroen C4
Citroen C4
Citroen C4

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