BMW 5-Series E39 (1996 - 2003) - 02 2.5 petrol m-sport smoking at high revs

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Tue 29 Sep 2009 21:19
02 2.5 petrol m-sport smoking at high revs - parmy
can anyone help me, my 525sport has been smoking recently when driving at high revs.i've had misfiring problems aswell so i changed my plugs. it drives fine if i take it easy, but the problems still there. i think i have a fuel injecter problem. has anyone had any problems similar to mine?

Edited by Dynamic Dave on 30/09/2009 at 01:21

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Wed 30 Sep 2009 11:01
02 2.5 petrol m-sport smoking at high revs - Falkirk Bairn
had misfiring problems aswell so i changed my plugs. i


Try the cheap things first - plugs and leads -age/heat causes leads to fail
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Wed 30 Sep 2009 11:17
02 2.5 petrol m-sport smoking at high revs - Dynamic Dave
Would an 02 registered car have leads? I thought most cars made within the last 10 years had coil packs?
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Wed 30 Sep 2009 11:45
02 2.5 petrol m-sport smoking at high revs - Hamsafar
What colour is the smoke?
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Wed 30 Sep 2009 21:36
02 2.5 petrol m-sport smoking at high revs - parmy
its a grey colour. i'm not losing coolant or oil. you can hear the cataletic converter rattle when accelerating hard.
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Fri 2 Oct 2009 18:50
02 2.5 petrol m-sport smoking at high revs - parmy
i've been told to check the oxygen sensors
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Fri 4 Dec 2009 23:24
02 2.5 petrol m-sport smoking at high revs - parmy
further into my investigation the engine management light is on and is smoking quite bad. i've had a diagnostic done and it turns out to be a damaged wire harness which needs replacing.
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