Rough feeling idle - EGR?

[Cozza]

Hi folks,
My 2006 1.5 dci has started feeling a bit rough sometimes when idling. It's strange as the rev counter doesn't budge a bit, but the car is definitely not running correctly. Apart from this, which can be cleared by revving it a wee bit, the car runs perfectly. It's only an 86bhp car but I'm sure they but a 106 in by mistake lol!

I'm thinking the EGR valve needs a clean but what are others' thoughts? All inputs greatfully received!

[Husky_Dog]

Hi Cozza,

Have a read of this technical document. I think it will help you troubleshoot further...

https://www.ms-motor-service.com/ximages ... en_web.pdf

Kind regards,
Will.

[Cozza]

Thanks Will. A great link. If it ever gets above freezing point and my fingers are less likely to freeze onto the engine block I'll go through the test procedure!

Have a good Christmas

Cozza

[davelowe]

I had this problem on mine. The problem turned out to be in the crankcase breather system. The tubes were literally blocked with a wax like substance.

[Ray]

i had this problem this week - turns out the car ate 1 litre of oil this month (i checked oil levels last month)

[clausmarquez]

ray what was the problem? i've had this issue also, now my car is really rough and my check injectros light is lit, sadly i wont be able to have this checked till after the holidays so no car for me!

[Ray]

no idea what the problem was.
i added the litre (i always carry a top up bottle in the boot) and it's been fine. Took it easy until it warmed up then gave it a good boot to max revs in first few gears. no black or white/blue smoke. Did about 100 miles of driving

i can only think a seal has contracted due to cold causing the oil leak somewhere (not sure where though) which then expands when engine warms up sealing it again.

[Husky_Dog]

i had this problem this week - turns out the car ate 1 litre of oil this month (i checked oil levels last month)

My 1.9 Dci is prone to eating the oil during cold weather as well. I believe that short runs don't help in this cold snap. A typical journey to work for me is 5 miles door to door, so the engine is run cold a lot.

Carried out a 9000 mile oil change a couple of days ago as I was down 3 bars on the dipstick (about 750 ml). I find on longer journeys where everything gets up to temperature very little oil is consumed. During the service there was a lot of oil in the intercooler pipe suggesting the oil is coming from the turbo side of the system.

Running on Halfords fully synthetic 5W40 as I find the Mobil 1 0W40 gets consumed at a faster rate. I guess as it is that little bit thinner when the engine is cold.