Vauxhall astra diesel astrolife A/CCDTI 2010 - slow stuttering after having new EGR fitted - Julie Laragy

Our car was losing power so we had new EGR fitted, when it was collected from the garage when accelerating it was almost as if the car would pause and then move forward again repeatedly,we discovered it had a hole in the fuel tank and tank was virtually empty. So we had a new fuel tank fitted but the car is still doing the pausing then moving forward action when accelerating, the garage doesn't know what it is so we took it to a diesel specialist and all tests show everything is working fine, Has anyone else had this and if so what was it and how do we stop it happening. Thankyou

Vauxhall astra diesel astrolife A/CCDTI 2010 - slow stuttering after having new EGR fitted - hardway

just a hunch going on the faulty tank try blowing compressed air through the fuel lines,

After they've been disconnected first.

Might be there's a partial blockage.

Vauxhall astra diesel astrolife A/CCDTI 2010 - slow stuttering after having new EGR fitted - Railroad.

It amazes me that people seem to have an obsession with the EGR valve and think it's the cause of all sorts of problems. Its purpose is to reduce Oxides of Nitrogen (NOx), which is the harmful content of the exhaust. It does not serve any other purpose. The valve should only be open when the engine is under relatively light load, ie when cruising, so that its effect is not noticable by the driver. It should be closed when the engine is idling and at full load. If it was open at these times then the engine would be starved of oxygenated air, and this would cause a loss of power. Othere than that it should not cause any problems. If the valve moves freely through its entire range, and is clean then there really isn't anything else that can be wrong with it. I think garages like to blame it because they don't have any other answer.

A loss of power on a diesel engine will essentially boil down to a restricted air flow, loss of fuel delivery or a blocked exhaust. All of these should be checked and eliminated first.

Vauxhall astra diesel astrolife A/CCDTI 2010 - slow stuttering after having new EGR fitted - Julie Laragy

Hi thank you for your reply, I only mentioned the EGR as it was part of the recent history, the reason it was changed was that an engine warning light came on and the code revealed it was the EGR. we dont know how the fuel tank got damaged as that is how it came out of the garage along with this new stuttering when accelerating, so a new fuel tank has been fitted but no-one seems able to find the cause of the stuttering not even diesel specialists. I was hoping someone else may have had the same issue and could let me know what it turned out to be. I appreciate your advice.

Vauxhall astra diesel astrolife A/CCDTI 2010 - slow stuttering after having new EGR fitted - hardway

Like I and Railroad stated eliminate probables.

Fuel starvation would be my first check.

And as this is unlikely to generate any fault codes it's worth checking for blockages in the lines or air gettig into the same.

 

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