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Thread: Does thrashing the Dti prevent coking?

  1. #1
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    Default Does thrashing the Dti prevent coking?

    Or is it inevitable or what? My 2.2Dti SRI was coked up when I got it, the EGR, boost sensor and throttle body were cleaned, I had the turbo cleaned by my trusted mechanic, and I cleaned the top of the inlet manifold that I could access through the throttle body hole. However, that is only a small portion of the throttle body obviously.

    But what I am wondering, whilst I do spend about 6 miles of my 13 mile journey in stop start 5mph traffic every morning, is it inevitable these things will clog again, or the fact I thrash it whenever possible help? i.e. traffic lights, motor way, red lining in 3rd and sometimes in 4th, always in 1st and 2nd, I know it won't decoke the parts of the manifold I haven't cleaned, but will it stop the rest from coking up again?

    Will I notice a big difference decoking the rest of the upper manifold?

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    a good thrapping now & again will always help

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    Regular Member chewy71's Avatar
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    just needs a long run at temperature,.. not really needing an 'italian tune' to be honest.

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    Regular Member Craig1985's Avatar
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    How I look at it is- I owned my since new for 4 years sold it with 100k, I never had inlet or egr problems, maybe coz I drove it harder that the average person?

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    Quote Originally Posted by Craig1985 View Post
    How I look at it is- I owned my since new for 4 years sold it with 100k, I never had inlet or egr problems, maybe coz I drove it harder that the average person?
    That was my train of thought too. At my last job in NZ I had a 1.6 Suzuki Vitara for work, a colleague had the 2.0, but mine was faster away from the lights and used less fuel, despite the fact I caned it everywhere, and it revved freely to the redline, whereas his was sluggish, thirsty and struggled to hit 5000rpm, let alone the 6000rpm red line

    Admittedly mine a bit like his when I first inherited it at 39000kms, but when I left at 110,000 it has been trouble free motoring, whereas his had multiple engine problems with similar mileage, and his smoked whereas mine was emission free, made me a great believer in a daily visit to the redline, even in the diesel where its 1000rpm too far.

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    Regular Member chewy71's Avatar
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    Had mine from new, 3 1/2 years and 80k miles,.. no issues. I don't cane it. It's simply a matter of running at temperature. If you tootle round town on 5 or 10 minute trips then it will kill it. Especially if you have DPF which all new diesels now have.

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